CNN CNN


 

Return to Transcripts main page

CNN NEWSROOM

Boston Marathon Bombing Suspect Captured; Bostonians Enjoy First Game At Fenway Park Since Marathon Bombings; Sean Collier's Body Brought Home

Aired April 20, 2013 - 22:00   ET

THIS IS A RUSH TRANSCRIPT. THIS COPY MAY NOT BE IN ITS FINAL FORM AND MAY BE UPDATED.


DON LEMON, CNN ANCHOR: You are in the CNN NEWSROOM. I'm Don Lemon, live tonight in the city of Boston.

This is a city that has spent the last 24 hours still wounded, but there is a measure of satisfaction in the air right now. That is because the two men police believed filled and wounded people at the Boston Marathon are now off the streets. And nowhere in Boston today that the city relief and pride show more than at Fenway Park.

Believe in Boston. Be wicked strong. It was hard not to be part of the Red Sox nation today.

The heroes of Boston this weekend, everybody wearing a police uniform. They are the ones who hunted down and arrested Dzhokhar Tsarnaev who spent his last moment of freedom curled up hiding from cops in a boat under a tarp in a Boston Suburb.

And while they celebrate at Fenway, police cars line the streets today to pay respect to the MIT officer killed Thursday night allegedly by Tsarnaev's brother.

Sean Collier's body was delivered by motorcade from Boston to his hometown of Wilmington, Massachusetts.

Tonight, I have new information about Dzhokhar Tsarnaev's straight from the hospital where he is in serious condition. If this bomber suspect has anything to say, it will have to wait. Federal officials are saying that the 19-year-old college student had injuries to his throat and for now, probably cannot talk.

The bombing suspect was finally surrounded and taken down in the neighborhood in Watertown, just outside of Boston. But he did not go quietly.

CNN's Brian Todd has details for you.

(BEGIN VIDEOTAPE)

BRIAN TODD, CNN CORRESPONDENT (voice-over): As he was cornered, Dzhokhar Tsarnaev, police say, engaged them with gunfire. It went on for several minutes and police lobbed in flash-bangs for caution to stun him.

In the end, authorities showed their determination to capture the suspect alive. Listen to officers negotiating with him as he has hold up inside a boat in a backyard in Watertown.

UNIDENTIFIED MALE: Come out on your own terms. Come out with your hands up.

TODD: We sneak through alleys and backlogs to get to within a couple of hundred yards to the boat. During negotiations, there was a word of reassurance.

UNIDENTIFIED MALE: You will not be harmed.

TODD: And an appeal to someone they knew was in pain.

UNIDENTIFIED MALE: We know you are bleeding. We know you are tired.

TODD: As we shot this exclusive video, police rushed us saying we were in the crossfire zone. It was just minutes later that police captured Tsarnaev. He had lost blood. HE was weakened,

These pictures from the Massachusetts state police show thermal imaging from a helicopter of the suspect as he hid in the boat. The entire neighborhood had been on locked down, residents terrified as law enforcement went door to door. After the standoff, we spoke to neighbors.

Here on Cipher street, this is one of the houses where police were coming through the neighborhood looking for the suspect. This is Eddie Beck's house. They took as through what it was like when SWAT teams came through here.

EDDIE BECK, WATERTOWN RESIDENT: They came in, they search the living room area, dining room, went through all the bedrooms, bathrooms, kitchen area.

TODD: Did they search cabinets and things like that?

BECK: No. They didn't go through cabinets or anything like that, but they did go through all the bedrooms' closet doors then, they made their way to the back here.

TODD: Ed share his own footage of the SWAT teams combing through his house. During this moment, they didn't know where Tsarnaev was or whether he was carrying explosive on his body. Beck got a chilled just thinking about it.

BECK: Knowing that they had him surrounded and so close to our neighborhood, it made us think that he might have been here at night time and they kind of flashed him out into that area.

TODD: Vivyan Stevens also lives very close to the house where Tsarnaev was cornered.

TODD: How do you fell right now that it is over?

VIVYAN STEVENS, WATERTOWN RESIDENT: Yes. It's surreal. I don't really -- I think I'm numb. I don't really feel -- I guess, I can believe all of this was happened. I know it is happening, but I mean, I'm very happy that, you know, it is over and they got him.

TODD: Sentiments echoed by thousands of her neighbors in Watertown. Cheering police as they pulled after the arrest.

(END VIDEOTAPE)

LEMON: CNN's Brian Todd is with me now, live.

So, Brian, you got some new information, I understand tonight, about the officers who actually hand-capped the suspect at the very end, right? They had some motivations, didn't they?

TODD: They did, Don. And those officers were from the Massachusetts bay transit, authority police, they were the ones to put the final hand-caps on him on Friday night. They did have some motivation. It was one of their officers, one of their officers was injured in the really violent exchange between the two brothers and police overnight Thursday into Friday.

Also, I have some new pictures for you, Don. Daylight video of the boat that was -- that the suspect was holdup in on Friday and into Friday night. We have some new daylight video we got just a short time ago of the boat without the tarp on it. law enforcement authorities, FBI and other are combing over and taking pictures of it. That is an active scene still there gathering evidence, swabbing for the finger prints, the blood evidence, possible weapons. It is still a very active crime scene.

Got some new video for you from daylight of that boat. You can see without the tarp on, some very large and white motor boat. And right now, it is a pretty hot crime scene.

LEMON: All right, Brian Todd in Watertown.

Brian, thank you very much for that.

The family of the smallest victim of the Boston bombing is celebrating the work of the law enforcement officers. 8-year-old, Martin Richard was killed Monday while his father ran in the marathon. His family released a statement.

The statement says, out family applauds the entire law enforcement community for a job well done, and trust that our justice system will now do its jobs. Our community is once again safe from these two men. None of this will bring our beloved Martin back or reverse the injuries these men inflicted on our family and nearly 200 others. We continue to pray for healing and for comfort on the ling road and lies ahead for every victim and their love ones.

This is Dzhokhar Tsarnaev inside. This is him inside an ambulance last night. Now, he is under heavy guard in Beth Israel Deaconess Medical center where some of the people, the allegedly armed also been receiving care.

I wasn't to go to CNN's senior medical correspondent, Elizabeth Cohen. She is outside the hospital. Elizabeth, There are new details about his injuries since I last spoke with you. What do you know?

ELIZABETH COHEN, CNN SENIOR MEDICAL CORRESPONDENT: Don, these are very important details from my colleagues, Deb Feyerick and also what we have learned, Susan Candiotti.

So, what we have learned is that he has wounds to his throat and also, this is very, very important, he is insedated (ph) and sedated.

So, what that means is that he has a tube going down his throat that attached to a ventilator that breathe for him. That doesn't mean he can't breathe on his own. Often doctor will incubate someone and put them on the ventilator, he said he want them to has to breathe on their own. It is more therapeutic. It takes the strain away if a machine breathes for them.

So, as you said earlier in our broadcast, this explains why governor Deval Patrick has said that he can't communicate right now. Injury to the throat, sedated and insedated -- Don.

LEMON: Elizabeth, give us an update on the bombing survivors. How any are still in the hospital at this point?

COHEN: There are at least 57 bombings survivor are still in hospitals around the Boston area, two are in critical condition.

LEMON: Elizabeth Cohen, thank you very much. We appreciate your reporting.

We want to go back now to Watertown and CNN's Susan Candiotti.

Susan, that street is still an active crime scene. Now, how long will investigators be there and what are they doing?

SUSAN CANDIOTTI, CNN NATIONAL CORRESPONDENT: Well, it certainly would a lot of people around here would like to know if they are taking a lot of time and there is no rush here, they want to carefully go over every inch of that boat that you saw and to make that they are not missing any other pieces of evidence, possibly hidden explosives elsewhere. I mean, there is no indication of that. But, they want to pick up every bit of evidence they can before they closes down and reopen the street and they hope that the residents of this area understand.

But tonight, we have those amazing thermal images that were taken off the boat last night when they are making the arrest. These photographs coming to us from the Massachusetts state police. Using technology that has been around for years, but they use heat imaging to look from the air down at that boat with the suspect was hiding. And you can see in the pictures, first the white image shows you the heat inside that body where he was lying underneath that tarp. And then it goes to a black image for you can even make out his feet as he was inside the boat.

But before the approach did, they weren't sure whether there were any bombs inside. There, so, the use of robotic arm to move closer and closer and lift up that tarp before they move in to try to get him to come out. Of course, there was an exchange of gunfire and eventually, they get them out of there. And as Elizabeth Cohen was reporting and as I have learned from a law enforcement official, even if the suspect wanted to cooperate, he can't because of his medical condition. But certainly, that is something they are going to want to do to try find out from him all the information that they can before he had read his rights. They have that special exemptions under federal law, investigators say, to talk to him to find out whether he has any information that could put the public at risk before his rights are read to him, Don.

LEMON: All right, Susan Candiotti in Watertown as well.

Thank you, Susan. Appreciate your reporting.

Well, the father of Tsarnaev brothers stands by their innocence. The suspects' uncle says it is now time for Dzhokhar to seek forgiveness.

He sat down with CNN for an exclusive interview. And also spoke about the older brother.

(BEGIN VIDEO CLIP)

RUSLAN TSARNI, BOMBING SUSPECTS' UNCLE;; He used his younger brother. He wasted his life. I understand he did not do what -- I mean, he messed up his own. I know what was going on there. But, he messed up his life that's why he decided take lives of innocent people, hurt innocent people. I may believe he is been full of evil, maybe he has been himself as an evil. He turned to be an evil. As I said, confused, entirely confused.

(END VIDEO CLIP)

LEMON: The family of Tamerlan's widow said this today.

Our daughter has lost her husband today, the father of her child. We cannot bean to comprehend how this traumatic tragedy occurred. In the aftermath of the Patriot's day horror, we know that we never really knew Tamerlan Tsarnaev. Our hearts are sickened by the knowledge of the horror he has inflicted.

Coming up this hour, from the twin bomb to Dzhokhar's final standoff with police.

We are looking back the events in Boston as they fold it. How did police identify the suspects with such remarkable speed? What's the motive? Were there warning signs that authorities may have missed?

And what's next, as the city of Boston begin to recover from a week of terror?

(COMMERCIAL BREAK)

(VIDEO CLIP PLAYING)

LEMON: As we focus on the man who triggered one of the biggest manhunt in American history. We should also take a moment to remember the victims of this week's violence in Boston.

Krystal Campbell, a restaurant manager, who wants the Boston marathon with the friend. She made everyone feel special, according to her friends.

Little Martin, an 8-year-old who liked to play sports and love the Red Sox. He was waiting at the finish line to welcome his dad who was running the marathon.

And Lingzi Lu, who was earning a master's degree in statistics at Boston University. She looks forward to a career in finance.

And of course, there was the final victim, officer Sean Collier, who was shot and killed in Thursday night's shootout with Tsarnaev brothers.

And right now, there are 57 people still in the hospital recovering from wounds on Monday's bombings, two of them are in critical condition tonight.

The Boston bombings were one of the most documented crimes in history. Thousands of cameras are rolling both during and in the aftermath of the bombings. Law enforcement put out a request for photos and videos to help pieces together the events of the day.

So, joining me is CNN's international security analyst, Jim Walsh.

Jim, should credit be given to social media for helping to identify the suspects so quickly?

JIM WALSH, CNN INTERNATIONAL SECURITY ANALYST: I think so. I think this is one of the big differences that we have seen since 9/11. In 9/11 no facebook, no camera phones with video where everyone can document. We all documenting all the time. And I think this is going to be bigger, not smaller going forward. And even now, today, what was some of the sources for new information about the suspects in which you took videos, twitter and other postings.

So, this is here to stay.

LEMON: And plus, people are taking pictures at the finish line.

WALSH: Absolutely.

LEMON: That's what they are doing and then, they are posting it, look, I ran the marathon with my cousin, my buddy ran the marathon (INAUDIBLE).

WALSH: Exactly.

LEMON: How do authorities go about piecing together all these images? What specifically are they looking for, John?

WALSH: Well, you know, I think, first of all, they are looking for time sequence. They are trying to work back from the moment of explosion to the crowd around there and then the preceding time. So, it is really temporal.

But, this is a process that, believe it or not, these are technologies and techniques and trainings that have been really developed in the department of defense and elsewhere where we have 24- hour surveillance from the drone or other source of capturing information. So, all of these is moving it like speed, for different reasons, but this is the -- this is the future. The future is now and we will see more not less.

LEMON: On a personal note, do you live in Watertown?

WALSH: Yes. I live, you know, I will saw you all week, you know. You were standing in front my kids in the restaurant, (INAUDIBLE).

LEMON: Yes.

WALSH: Dunkin Donuts. So, this has been a very difficult and a very emotional week for me.

LEMON: Yes. Family, OK? Everybody is OK?

WALSH: Yes, we are fine. But, that, you know, I was at MIT, two blocks from where that police officer was killed. So, it's been a big week.

LEMON: Yes. Thank you.

WALSH: Thank you.

LEMON: Appreciate you joining us.

So, unclear in all of his as we have been discussing the motive. What's behind this horrible crime? And get this, the FBI was warned about one of the Tsarnaev brothers two years ago. The details, next.

(COMMERCIAL BREAK)

LEMON: Just who are the two brother implicated in this horrible week of violence? Tamerlan and Dzhokhar Tsarnaev are from the Chechen region and they came to the U.S. as Russian refugees.

Two years ago, Russian asked the FBI to question Tamerlan about the possible ties to extremist groups and no evidence was found. He died early Friday in a shootout with police. His brother escaped that shootout and managed to alluded police until he was discovered hiding in a boat and captured last night. He is in serious but stable condition.

The FBI has confirmed that two years ago, agents interviewed Tamerlan. Authorities overseas had determined he was a follower of a radical Islam.

Joe Johns has his story -- Joe.

(BEGIN VIDEOTAPE)

JOE JOHNS, CNN CRIME AND JUSTICE CORRESPONDENT: But, was getting so much attention is that FBI agents interviewed the suspect's brother two years ago and found nothing incriminating.

The fact that Tamerlan Tsarnaev was interviewed by the FBI almost two years before the marathon bombings, was already stirring up controversy before the chaos cleared in Watertown. The Republican chairman of the House homeland security committee.

UNIDENTIFIED MALE: If he was on the radar and they let him out their sight, that's an issue certainly for me.

JOHNS: Tsarnaev's contact with the agency were made public by the man's mother who suggested agents had been harassing her son for years.

ZUBEIDAT TSARNAEVA, MOTHER OF THE SUSPECTS: They knew what's my son was doing. They knew what actions and what is the sites on Internet he was going. How could this happen? How could they? They were controlling every step of him and they are telling today that this is a terrorist act.

JOHNS: The FBI confirmed that in 2011, they interviewed the older brother and family members. It did not say how many times. It was at the request of Russian intelligence according to a senior U.S. official. The FBI said the request was based on information that Tsarnaev was a follower of radical Islam, a strong believer, and that he had changed drastically since 2010.

In response to the request, the FBI says it checked U.S. government databases and look for derogatory telephone communications, possible use of online sites promoting radical activity.

The FBI says it did not find any terrorism activity, gave the results to the Russian government and asked for, but didn't get more information. Then, they closed the file.

THOMAS FUENTES, CNN CONTRIBUTOR: They don't give you more than everything that can be done has been done unless you know that there should be more of the story.

JOHNS: That interview came before travel record shows Tsarnaev flew from New York City to Moscow in January 2012 and stayed in Russian six months, returning to New York in July. It is not clear what he did there, but Tsarnaev's father has said his son was with him at all times.

But when he got back, things were different. Homeland security chairman McCaul says, he started putting radical jihadist material on You Tube Web sites. REP. MICHAEL MCCAUL (R), CHAIRMAN, HOMELAND SECURITY COMMITTEE: And what I am very concerned about is when he went over there, he very well may been radicalized and trained by these Chechen rebels who are the fiercest jihad warriors.

JOHNS: But the dead suspect's uncle told CNN, his radicalization began in the Boston area.

RUSLAN TSARNI, SUSPECTS' UNCLE: And he studied faith there in Cambridge, right there in the streets of Cambridge. Where this guy is new convert is going to the local mass on Massachusetts (INAUDIBLE). So, on the same, it is part of them.

JOHNS: The document show no record of the younger brother, Dzhokhar Tsarnaev, leaving the country. Tamerlan Tsarnaev was a legal permanent resident of United States. His brother is a naturalized citizen. Both men were born in Kirgizstan -- Don.

(END VIDEOTAPE)

LEMON: All right, Joe. Thank you very much for that.

Just ahead of Boston suburb turns into a war zone.

(VIDEO CLIP PLAYING)

LEMON: We are learning new details about the early morning shootout in Watertown and what killed suspect number one.

(COMMERCIAL BREAK)

(BEGIN VIDEO CLIP)

UNIDENTIFIED FEMALE REPORTER: There is an active incident in Watertown right now.

UNIDENTIFIED MALE: We must have heard about 60 gunshots.

UNIDENTIFIED FEMALE REPORTER: (INAUDIBLE) is advising all Watertown eastern residents to remain in their homes.

UNIDENTIFIED MALE: There were dozens of police officers (INAUDIBLE). We could see them yelling, things like heavily armed in yard.

UNIDENTIFIED MALE: We believe this to be a terrorist. We believe this to be a man who has come here to kill people. We need to get him in custody.

UNIDENTIFIED MALE: The governor has immediately suspended all public transportation service.

UNIDENTIFIED MALE: The shelter place recommendation has been extended throughout the city of Boston.

UNIDENTIFIED MALE: It is a ghost town. It is not a soul on the streets.

UNIDENTIFIED FEMALE: It is horrifying, So, this is my home.

UNIDENTIFIED MALE: We need more time for making significant progress up there, but it may take hours.

(END VIDEO CLIP)

LEMON: That was early in the evening, Friday, as police and FBI agents tighten their circle around the Boston suburb of Watertown. They knew somewhere in that circle was 19-year-old Dzhokhar Tsarnaev. Listen to the town's chief of police. He spoke at link with CNN's Wolf Blitzer.

(BEGIN VIDEOTAPE)

CHEF EDWARD DEVEAU, WATERTOWN, MASSACHUSETTS DEPARTMENT: There was an assassination of an MIT police officer.

WOLF BLITZER, CNN ANCHOR, SITUATION ROOM: And you believe by these two brothers?

DEVEAU: Yes.

BLITZER: Why would they want to kill this police officer?

DEVEAU: That's still under investigation. He was responding to a -- just a loud disturbance call in next you know, that happens.

BLITZER: Was it on the campus of MIT or at this convenience store?

DEVEAU: I believe it was on campus. And then, I think, then they fled. They did a carjacking and somehow for some reason, they ended up coming to Watertown. And he was responding to a just a loud disturbance call and next you know, that happens.

BLITZER: Was it on the campus of MIT or at this convenience store?

DEVEAU: I believe it was on campus. And then, I think, then they fled. They did a carjacking and somehow for some reason, they ended up coming to Watertown. And that's where, you know, (INAUDIBLE) is engage, the two of them.

BLITZER: Then, what happened? So, pick up the story.

DEVEAU: Yes.

BLITZER: So, they are in a hijacked car, they had hijacked the car. They took the driver and then they let the driver go. After the driver supposedly went to an ATM and gave some money. Is that right?

DEVEAU: Right. There was some money withdrawn from his ATM. And so, what happened with Watertown, one of our first police officer, we are getting information based on ping the cell phone that he is in Watertown. So, we kind to know what street he is on.

BLITZER: Right. So Tsarnaev was using his own personal phone?

DEVEAU: No. This was just the victim's cell phone that we made in the received.

BLITZER: In other words, they let the victim go. They have bragged to the victim that they were the bombers of the marathon. Is that right?

DEVEAU: That's my understanding. They said we did the Boston marathon bombing and we killed the police officer.

BLITZER: Did they explain why they let the driver go? The man they have hijacked?

DEVEAU: No. I mean, I don't, you know --

BLITZER: Thank God, they did.

DEVEAU: Right. So, lucky for him and lucky for us that his cell phone remained in that vehicle. So, we were able to get updates.

So now, it about 12:30 in the morning down a residential street in Watertown. Everybody is sleeping, sleepy neighborhood and our officer sees two vehicles. The two brothers are in two different cars including the car that was hijacked. He calls notifies our station. We do all the proper procedure, do not engage to car. Let's get to some more back up. And before the backup could even get there, the two cars stop. They jumped out of the car and unload on our police officer.

BLITZER: When you say unload, what does that mean?

DEVEAU: They both came out shooting.

BLITZER: Shooting what?

DEVEAU: Shooting guns. Handguns and there was a long arm in the car, so we are not exactly sure. We are still piecing that together.

We estimate there was over 200 shots fired over a 10 -- five to ten minute period. During the exchange, all of the sudden, something about thrown at my police officers. And we now find out, it is exact bomb that was blow up in the marathon on Monday.

At some point, the first brother who died at the scene, he, all of the sudden, comes out from under cover and just start walking down the street shooting at our police, also trying to get closer now, my closest police was at five to ten feet away and they were exchanging gunfire between them. And he runs out the ammunition, the bad guy.

And so, one of my police officer comes off to the side and tackles him in the street for trying to get him hand-cap. These two or three police officer hand-cap him in the street --

BLITZER: The older brother?

DEVEAU: The older brother. At the same time, in the last minute, there, obviously have television. There is very, very stressful situation, one them yells out look out and here comes the blackish SUV that carjacked car directly at them. They died battled away and he runs over his brother and drags him down, short distance down the street.

BLITZER: In effect, killing his brother?

BLITZER: Yes.

(END VIDEOTAPE)

LEMON: Let's get more about that. And who could forget this, the beginning of the end for the Tsarnaev brothers.

(BEGIN VIDEOTAPE)

(VIDEO CLIP PLAYING)

LEMON: That was Thursday night's gunfight that killed Tamerlan Tsarnaev and wounded his younger brother who somehow escaped though not for long.

Curtis Hazlett who was an eyewitness to all of that. He joins me now.

I want you to take us back to that night and what you heard and saw. When you heard that -- we saw the video, that was your neighborhood?

CURTIS HAZLETT, EYEWITNESS TO GUNFIGHT: Yes.

LEMON: Yes.

HAZLETT: Yes. It is about 1:00 in the morning. I was asleep and woke up to the house kind of shaking and a lot of boom. At first, I didn't really think was too much and, you know, I heard a second boom. At the point, realized something is going on so I went to the window. By the time I got to the window, about three police cars came up and parked right in front of my house and they got out and then immediately started exchanging gunfire with the individuals. I couldn't see them because they were down the street blocked by a house.

LEMON: Yes. But, you are on the third floor.

HAZLETT: Yes, correct.

LEMON: And then -- but you did see the exchange between the police and the brothers. You said that the older brother, Tamerlan, charge police officer.

HAZLETT: He did. Yes, at one point, he ran towards the police and then tried to go cross the road and the police officer ran out and grabbed him then basically took him down to the ground.

LEMON: So, police have him cornered?

HAZLETT: Yes.

LEMON: And the older one got out of the car?

HAZLETT: I couldn't see the car. So, I don't know if they were in a car or not. I assumed they were.

LEMON: All right. Did you see -- they said that they were throwing explosives out of the car. Did you see that or --?

HAZLETT: I just saw the explosives going off. I couldn't see their car them until he had come in the police view or into my view.

LEMON: OK. So, the older brother gets out in the car, charges police officers, police take him down.

HAZLETT: Yes.

LEMON: They were trying to hand-cap him on the ground.

HAZLETT: Yes.

LEMON: And then, what happens?

HAZLETT: At that point, a black SUV came out from behind the house where they were and I couldn't see him and ran over his brother.

LEMON: So, do you believe the younger one, was it?

HAZLETT: Yes, he did.

LEMON: OK. Dzhokhar was in the SUV driving and ran over his own brother.

HAZLETT: Yes.

LEMON: He really killed his own brother.

HAZLETT: I do believe sir, yes.

LEMON: What happened to police? What happened when he drove towards them?

HAZLETT: There were two police officers who had their back to where the car was because they were trying to sedue (ph) the first suspect. And they got out of the way just in the nick of time. HE went over them and then they started shooting rounds into the SUV and then took off to follow the SUV. But there were a bunch of cops that stayed back to tend to the first suspect.

LEMON: When he ran over his brother, what happened? You said -- did he drag him?

HAZLETT: Yes, about 20 feet.

LEMON: About 20 feet he dragged his own brother.

HAZLETT: Yes.

LEMON: Down the street. What were you guys doing? Were you alone at the time?

HAZLETT: My roommate and his girlfriend were in the third floor with me. And my roommate and I were at the window and his girlfriend was in the other room.

LEMON: Your reaction?

HAZLETT: Shock, awe, nervous, anxious, the whole realm, really.

LEMON: Yes. Unbelievable. And what do they do once the car got away? You said they were shooting rounds at the car. The police who were there on the scene, did they attend to the other person or was he too far away?

HAZLETT: They attended to the officer that was down, the transit officer -- they got him in the ambulance within a matter of minutes and off. And then, about ten or so minutes later, they had an ambulance at the scene for the suspect.

LEMON: Curtis, thank you.

HAZLETT: Yes. Thank you, Don.

LEMON: I really appreciate you joining us. All right?

HAZLETT: Yes.

LEMON: Thank you so much.

Remembering one of their own.

(VIDEO CLIP PLAYING)

LEMON: Police, fire and first responders are ling the streets of Boston tonight paying a silent tribute to fallen MIT police officer Sean Collier. Officials say for no obvious reason the Tsarnaev brothers shot and killed Collier while he was sitting in his cruiser Thursday night, shortly after car shooting.

It was a wild shootout between the suspect and police left transit officer Richard Donohue seriously injured. And coincidentally Donohue and Collier graduated from the police academy together.

The motorcade was set to pass by a vigil being held in Collier's honor in his hometown of Wilmington.

CNN's Poppy Harlow is there for us now.

Poppy, it is such a sad story. You know, you spoke to some of the people who were close to him, some of his close friends.

POPPY HARLOW, CNN CORRESPONDENT: Yes, I did. I mean, it was an amazing scene that unfolded behind us this evening. It was the vigil for that gunned-down police officer, Sean Collier. And we were there when that motorcade left up Boston medical center and brought his body out here to -- I would say, I don't know, Don, over 500 people at least from this community, fellow police officers, et cetera, coming to honor this 26-year-old hero that we're told by so many people, all he wanted to do was be a police officer. And he did realize that dream.

Tonight, we heard from his brother, Andrew, also his stepfather, his boss, the police chief at MIT, many people talking about their best memories of this man. And after the vigil, we had a chance to speak one-on-one with the man that knows Collier very well, MIT police chief John Difava. And he discussed with me just how much this young man meant to MIT, meant to the entire community. Really gives you a sense of the quality of person he was. Listen.

(BEGIN VIDEO CLIP)

JOHN DIFAVA, MIT POLICE CHIEF: I believe he had the calling. He just wanted to be in law enforcement. It wasn't about the pay or the benefits or the retirement. It was about what law enforcement was supposed to be all about, that's to help people. He was a master at helping people. I think that MIT lost someone that truly cared about their community. And I think we lost someone that we learned more from him than he ever learned from us.

HARLOW: At 26 years old.

DIFAVA: At 26 years old.

HARLOW: Says a lot.

DIFAVA: You know, I've been a cop for almost 40 years. I was 28 years in the state police. (INAUDIBLE). You see a lot. You really do. I just never saw anything like this. It's heartbreaking. Everything about it is just wrong. Killing him was senseless, the loss of a person of his quality, his age, the fact that it happened on a college campus. Everything about this, nothing. It just crazy.

(END VIDEO CLIP)

HARLOW: And, Don, also tonight, we talked to three MIT students that are also EMTs and they were close, close friends of Collier. They came with flowers and messages for his family. Interestingly, Don, what we learned is that they not only were close friends of his, but they were the three EMT -- student EMTs on campus that had to respond to the call after his shooting and go to Collier. Incredibly, incredibly difficult for them to handle. Unimaginable really, Don. But a very sad night. But a night honoring this young man as well.

LEMON: I can only imagine. Poppy Harlow. Thank you very much for that, Poppy. And straight ahead, the final moments before last night's capture. Inside information, a moment-by-moment breakdown of how police captured Tsarnaev.

(COMMERCIAL BREAK)

(BEGIN VIDEO CLIP)

UNIDENTIFIED FEMALE REPORTER: They do have him cornered right now.

UNIDENTIFIED FEMALE REPORTER: They have the suspect. They believe it is the suspect.

UNIDENTIFIED MALE: We heard what appeared to be several shots. That sounds different than the flash bang. I heard one of those before. And it distinctively sounded different. It was definitely shots being fired.

UNIDENTIFIED MALE REPORTER: This is CNN breaking news.

ANDERSON COOPER, CNN ANCHOR, AC360: And if you're just joining us, good evening, everyone.

What started about 23 hours ago now seems to be finally over. The last suspect, the search for police according to Boston police department, that suspect is now in custody.

UNIDENTIFIED MALE: Today, the city of Boston, the city of Cambridge and the city of Watertown and many other communities can breathe a sigh of relief knowing two perpetrators who caused so much pain and anguish are no longer a threat to our personal safety and to our communities.

(END VIDEO CLIP)

LEMON: I want you to hear more now from the chief of police in Watertown. That's a suburb of Boston where that massive police dragnet finally closed in on Dzhokhar Tsarnaev and he was finally taken down.

(BEGIN VIDEOTAPE)

BLITZER: When did you realize that this was going down, that you had the second suspect?

DEVEAU: It was late in the day. You know, we had a report that, you know, that we got from our citizens. We asked them to keep vigilant and we got the call. And it sounded like really good information.

BLITZER: That person called and said, there's a guy in this boat in my back yard?

DEVEAU: That's right.

BLITZER: And it looks like there's blood there.

DEVEAU: Right.

BLITZER: Pick up the story.

DEVEAU: You know, at that point, we had a couple thousand police officers on scene. The turnaround was just incredible. The support we got from the state and from the region. So, we had the tactical people to be able to close that scene down and secure it. We did take our time to make sure that everybody was safe in the neighborhood. And eventually, we had to use some flash bangs to render the subject --

BLITZER: Tell the viewers what a flash bang is.

DEVEAU: It's a loud compression that would stun somebody for a short period of time. And then, we began negotiations, and slowly over a 15, 20-minute period we were able to get them to stand up and show us that he didn't have a device on him.

BLITZER: He's lying in this boat. He's been there for several hours. He's wounded clearly, right? He's bleeding.

DEVEAU: Right.

BLITZER: He's obviously weak. You come over there. And what do you say to him? You have a bullhorn. You start saying, come out with your hands up?

DEVEAU: We have a negotiator who was actually on the second floor of the house looking down at the boat --

BLITZER: You could see him?

DEVEAU: No. We couldn't see him. There was a plastic top over it but we had the state police helicopter that could tell us when there was movement in the boat by the heat sensor. So, we could tell he was alive and moving. We began the negotiations that way. And in over a long period of time, we were able to finally get him to surrender without any other -- anybody hurt --

BLITZER: So, he didn't use any more gunfire while he was in the boat --

DEVEAU: There was early gunfire when we first got in the area. He exchanged gunfire with some of the officers. And then, we secured the scene and there was no more gunfire after --

BLITZER: What kind of weapon did he have?

DEVEAU: We're not sure. The crime scene is still live down there. The boat -- the FBI crime scene search is there now. We haven't gone in to that boat. We don't know what's in that boat. There could be devices --

BLITZER: Because the FBI is in charge of that? DEVEAU: Yes.

BLITZER: Did he have an explosive vest on his body like his older brother did like the night before?

DEVEAU: Well, that was our major concern. And that's why no one wanted to go near him until we were able to get him to understand he needed to lift his shirt up so we could see his chest where we felt comfortable to send some people in to take him in to custody.

BLITZER: Did he do that?

DEVEAU: Eventually over a long period of time, 20 to 30 minutes. We finally get him to do that.

BLITZER: So, he had no explosives with him in the boat, as far as you know?

DEVEAU: We haven't got into that boat. It's a decent size boat. So, we don't know what else is in there. He needed first aid, you know. And so, he was transported by ambulance into a Boston hospital.

(END VIDEOTAPE)

LEMON: Two brothers accused of committing such terrible crimes. Why? We will get some insight on the so-called sibling effect next.

(COMMERCIAL BREAK)

LEMON: We want to get back now to the Boston marathon bombings.

Whenever something like this happens, we're left with the question why, always why? Why would two young men who came to America with their family in search of a better life turn on their adopted home? Their uncle thought he knew why.

(BEGIN VIDEO CLIP)

TSARNI: Again, (INAUDIBLE) I say what I think what's behind it. Being losers, not being able to settle themselves. And thereby just hating everyone who did.

(END VIDEO CLIP)

LEMON: Losers. Is it as simple as that, as simple as being a loser, or was there something more in their heads that led them to such a tragic end? Psychologist Wendy Walsh joins me now.

Wendy, what do you think? What drove these young men to commit such an atrocity? Will we ever know?

WENDY WALSH, HUMAN BEHAVIOR SPECIALIST: We may never know. But there are certainly lots of possibilities, Don. I mean, these are two men, two young men, there may have been a power dynamic with an older brother, younger brother. They may have felt culturally isolated. Despite the fact they've been in the country ten years, you know, the older brothers was known who have said he has no American friends. And then this search for identity that teenagers and young adults seek out and turning to the extreme parts of a Muslim religion. I must stop here to add that I think one of the biggest tragedies here is that good Muslim Americans again are in the news and there is misinformation about this religion because what these guys were practicing is not what 99.99 percent of Muslims would ever practice. But there's a search of identity. And when you carry this cultural duality, am I American? am I Russian? Am I Muslim? Am I not? There is sometimes -- the pendulum may sing too far to an extreme place.

LEMON: Yes. And they are practicing not religion. They're practicing extremism, really. So, you know, I think everyone understands what you're saying.

WENDY WALSH: Under the guise of religion, right.

I LEMON: Yes. You know, I want to talk about something that you said. You said this older brother, younger brother relationship. There's something called the sibling effect, brothers committing crimes together. Can you talk to us about that, Wendy? WENDY WALSH: Well, there's been plenty of research to support the fact that a lot of at-risk behaviors go viral between siblings, especially if the older one begins it first. So, research supports, you know, early smoking, early onset of sexual behavior, alcoholism, et cetera.

But the data on criminal behavior is sort of all over the map. There's nothing really provable. More important would be the fact the boys lived together and were very close together, which could happen really between two close friends as well. If we look at maybe the columbine shootings as well. One would tend to be a leader, one would be a weaker follower, if you will. And it makes sense if the older one was more the leader. But you can't say that just because they're siblings, crime is contagious. Some data supports it, others does not.

LEMON: Classmates say they were shocked at this, that, you know, they could hide their hatred so well, especially the younger brother. And I have to say what they did was horrific. But I've heard some people, especially parents, especially moms, Wendy, say, you know in some way, in some way, I don't understand why the 19-year-old -- in some ways, I feel sorry for him. This is what I'm hearing. He's 19- years-old. He's still a kid, he's still a teenager. And they feel that he was influenced by the older boy. And I mean, does that make sense?

WENDY WALSH: Absolutely. In fact, if you follow twitter, you will notice that a lot of Catholics and Christians are praying for him as well as praying for the victims of the bombing because there is this sense that, you know, maybe he was brainwashed, he was so young. And his older brother may have dominated him. So, we really don't know and we'll find out information as the weeks go on.

LEMON: All right, Dr. Wendy. Thank you. We really appreciate it.

WENDY WALSH: Thanks, Don.

LEMON: After a week of pain and heartbreak, celebrations in the streets of Boston. The collective sighs of relief continue today. The scene at Fenway Park, when we return.

(COMMERCIAL BREAK)

LEMON: I'm Don Lemon. Thanks for joining me.

We are going to leave you with the sights and sounds from Fenway park this afternoon as the Red Sox got their chance to help the city get back to a normal routine to blow off some steam and to say thank you.

Good night, everybody.

(VIDEO CLIP PLAYING)

(COMMERCIAL BREAK)