Story Highlights• NEW: Tour intended to ensure Pakistanis that probe into coach's death is "open"
• NEW: Police obtain security footage of stairwells, corridors of 17-floor hotel
• Pakistani cricket team arrives in London en route home
• Team captain, manager, player-coach interviewed second time in Jamaica
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KINGSTON, Jamaica (CNN) -- A senior Jamaican police official gave two Pakistani diplomats a tour Sunday of the 12th-floor hotel room where the body of Pakistan cricket coach Bob Woolmer was found last week.
Jamaican Deputy Police Commissioner Mark Shields told reporters the tour was intended to assure the diplomats that the investigation into who killed Woolmer is considered "open."
Woolmer's death came hours after a humiliating World Cricket Cup defeat at the hands of an unheralded Irish team on St. Patrick's Day.
Investigators now have an enhanced version of closed-circuit security footage taken in the Pegasus Hotel's stairwells and corridors, and Shields said he was optimistic that the tapes contain significant evidence.
Investigators also were continuing to gather DNA evidence and statements from the West Indies and Irish teams, which also stayed on the 12th floor of the 17-floor hotel.
Both teams remain in the Caribbean, though they have moved to other islands.
Contrary to unsourced media reports that surfaced after Woolmer's death, Shields said that he has uncovered no evidence of a row on the Pakistani team bus as it returned from the game against Ireland.
"The atmosphere on the bus was very subdued," he said.
The Pakistani cricket team arrived in London, England, on Sunday after getting permission to leave Jamaica.
Before allowing the Pakistani team to leave the Caribbean island, Jamaican police first wanted to clear up ambiguities in original statements by three team members to police two days ago, Shields said Saturday.
Those questioned were team manager Talat Ali, team captain Inzamam Ul-Haq and player and assistant coach Mushtaq Ahmed, he said.
Shields told reporters that the questioning was "standard police procedure."
Police are looking at betting and match fixing among their lines of inquiry. (Watch what has emerged as a possible motive in Woolmer's murder )
Woolmer, 58, was declared dead at a hospital after being found in his hotel room Sunday.
Nasim Ashraf, who resigned as chairman of the Pakistan Cricket Board after last Saturday's defeat, said he received an e-mail from Woolmer, expressing disappointment over the loss to the Irish team.
"I would like to praise my association with the Pakistan team, but now I would like to announce my retirement after the World Cup to live the rest of my life in Cape Town," the e-mail read.
Earlier this week, Jamaican police questioned, fingerprinted and took DNA samples from the entire Pakistani contingent -- players, managers and trainers.
The team touched down at London's main Heathrow Airport on Sunday. Players were the last to leave the plane and were escorted off by six police officers.
Television pictures showed the team looking grim-faced and speaking little as they headed to collect their baggage.
They then boarded a bus parked at the back of the terminal to avoid camera crews waiting for them in the main concourse.
The Pakistani contingent will be staying at a hotel near the airport until Tuesday, team spokesman Pervez Mir said.
He said team members were distressed over speculation that Woolmer's death might be related to match fixing.
"There have been a lot of unnecessary rumors," Mir said.
Players are prepared to return to Jamaica if investigators require further assistance, Mir said, adding that the team does not expect to meet with British police.
Match-fixing scandals -- some involving millions of dollars -- have plagued the international game over the last two decades. Some players have been banned for life and others jailed.
Pakistan's loss in the tournament prompted outrage among the team's hard-core fans. In the streets of Karachi, Pakistan -- before the news of Woolmer's death -- protesters burned effigies of Ul-Haq.
Woolmer, who was English, played cricket for England in the mid-1970s. He coached the South African national team before taking over as Pakistan's coach in 2004.
-- CNN's John Raedler, Alphonso Van Marsh and David Clinch contributed to this report
Members of the Pakistani cricket team board a bus after arriving in London from Jamaica on Sunday.