KARACHI, Pakistan (AP) - Pakistani officials say a bomb blast has killed at least 20 people in a neighborhood dominated by Shiite Muslims in the southern city of Karachi.
Police official Azhar Iqbal says the bomb exploded Sunday outside a Shiite mosque as people were leaving evening prayers.
No one has claimed responsibility, but Sunni militants linked to al-Qaida and the Taliban have targeted Shiites in the past, claiming they are heretics.
Initial reports suggest the bomb was rigged to a motorcycle, but a survey of the damage indicates there could have been additional explosives planted at the scene. Several buildings nearby caught fire.
A top government official Taha Farooqi says 20 people were killed and others are feared dead. He says more than 50 were wounded.