From CNN, :
KARACHI, Pakistan — At least 15 people have been killed and 90 injured by a suspected suicide bomber at a Shiite mosque in the southern Pakistani city of Karachi, police said.
Hundreds rioted across the city after the bombing, throwing stones and torching buildings.
According to an officer at the scene, the bombing appeared to be a suicide attack.
President Pervez Musharraf condemned Friday’s blast as a “heinous act of terrorism” and ordered police to trace the culprits, according to The Associated Press. …
Video showed the blood-spattered and shattered interior of the mosque with body parts littering the floor along with discarded worship caps and prayer rugs. …
The mosque is housed in a religious school for students aged between 4 and 18. The school is run by the government and has separate mosques for Sunni and Shiite Muslim worshippers.
Witnesses told AP though that most of the victims were adults who were praying at the mosque.
There have been frequent terrorist attacks and sectarian violence in Karachi, Pakistan’s largest city and its business hub. Police there have been on high alert since April when they raided a building and found weapons and explosives.
About 80 percent of Pakistan’s 150 million people are Sunni, and the rest Shiite. They live mainly in peace, but radical groups on both sides frequently carry out deadly attacks.