No claim of responsibility yet for Pakistan bombing that killed 45
March 4, 2013 -- Updated 1159 GMT (1959 HKT)
- The blast apparently targeted Shiites in Karachi, police say
- Authorities say the toll could rise as rescue workers search the rubble
- Shiites have been the victims of dozens of sectarian attacks in the past year
Islamabad, Pakistan (CNN) -- No group has stepped forward so far to claim responsibility for a massive car bombing in the southern Pakistani city of Karachi that killed at least 45 people over the weekend in what appeared to be the latest attack on the Shiite minority in the country.
The blast Sunday tore into nearby buildings, wounding about 150 people, and authorities warned that the death toll could rise as rescue workers continued to search for bodies amid the rubble.
Caused by a vehicle loaded with about 150 kilograms (330 lbs) of explosives set to a timer, the explosion took place in Abbas Town, an area of Karachi where many Shiite Muslims live, police said.
In recent months, a number of large-scale bomb attacks have targeted Shiites, who are overwhelmingly outnumbered by Sunni Muslims in Pakistan.
A vehicle bomb explosion in Karachi, Pakistan's largest city, killed at least 42 people and wounded at least 145 others on Sunday, March 3, police said.
Photos: Deadly explosions hit Karachi
A huge bombing last month in a Shiite neighborhood in the city of Quetta killed about 90 people and fueled outrage about authorities' failure to stem the attacks, many of which were claimed by the Sunni militant group Lashkar-e-Jhangvi.
Pakistani security forces responded by carrying out raids in the area in which four militants were killed and others arrested. But Sunday's attack in Karachi suggested they hadn't done enough to dissuade further attacks.
Amnesty International says it has documented 92 separate attacks on Shiites across Pakistan since January 2012 that have resulted in the deaths of more than 500 people. It has criticized what it says is the lack of prosecutions of those responsible for the violence.
Pakistan's Prime Minister Raja Pervez Ashraf and President Asif Ali Zardari both condemned the bombing Sunday.
Although many of the recent attacks against Shiites in Pakistan have focused on the Hazara ethnic group in Quetta, sectarian violence has struck Karachi previously.
In February 2010, for instance, at least 18 people died in blasts that took place near a bus full of Shiite religious observers and in front of a hospital in the city.
And in late 2009, a suicide bomb attack on a Shiite procession moving through Karachi killed at least 40 people.
CNN's Nasir Habib reported from Islamabad and Jethro Mullen wrote from Hong Kong
Part of complete coverage on
September 19, 2014 -- Updated 1049 GMT (1849 HKT)
British PM David Cameron has had the narrowest of political escapes.
September 18, 2014 -- Updated 1201 GMT (2001 HKT)
Put yourself in the shoes (and sixth-century black robes) of ISIS' Abu Bakr al-Baghdadi, the mysterious boss of the terror group.
September 18, 2014 -- Updated 0500 GMT (1300 HKT)
China's Xi Jinping and India's Narendra Modi, leaders of the most populous nations face similar challenges. Can they learn from each other?
September 17, 2014 -- Updated 2236 GMT (0636 HKT)
The U.S. is not returning combat troops to Iraq, President Barack Obama insists.
September 17, 2014 -- Updated 0038 GMT (0838 HKT)
A man abducted alongside killed U.S. journalist Steven Sotloff tells CNN that no one from the U.S. government has tried to talk with him.
September 17, 2014 -- Updated 1508 GMT (2308 HKT)
Mulatu Astatke is the founding father of ethio-jazz: a fusion of Ethiopian music with western jazz.
September 17, 2014 -- Updated 1311 GMT (2111 HKT)
Have you been to these? The global museum list, released Tuesday, ranks 25 of the world's best museums.
September 17, 2014 -- Updated 1703 GMT (0103 HKT)
iOS 8, the latest version of Apple's mobile operating system, comes with new features that you'll enjoy.
September 17, 2014 -- Updated 0927 GMT (1727 HKT)
Psychedelic drugs are being researched as a potential treatment for conditions ranging from anxiety to tobacco and alcohol addiction.
September 18, 2014 -- Updated 1409 GMT (2209 HKT)
Even death couldn't part two skeletons excavated from a lost chapel in an English county, found with their fingers entwined.
September 19, 2014 -- Updated 1007 GMT (1807 HKT)
Each day, CNN brings you an image capturing a moment to remember, defining the present in our changing world.
Browse through images from CNN teams around the world that you don't always see on news reports.
Today's five most popular stories