Pakistani officials say a bomb blast has killed at least 25 people and wounded 50 others in the southern city of Karachi.
Police say the bomb exploded Sunday outside a mosque as worshippers were leaving evening prayers in a neighborhood dominated by minority Shi'ite Muslims. Several buildings were damaged, and women and children are among those wounded.
Authorities suspect that more than one explosive was used in the attack.
No one has claimed responsibility, but Sunni Muslim militants with links to al-Qaida and the Taliban frequently target their Shi'ite neighbors across Pakistan, especially in Karachi which has seen its share of violence.
According to the independent Human Rights Commission of Pakistan, at least 2,284 people died in ethnic, sectarian and political violence last year in the country's largest city.