ISLAMABAD, May 7 (Xinhuanet) -- At least five people were killed and 35 others wounded on Friday in a powerful bomb explosion at a Shiite Muslim mosque in Pakistan's southern city of Karachi, the police said.

    The explosion occurred shortly after 1 p.m., the hour of Friday prayers.

    Ambulances rushed to the explosion scene. The police said several of the wounded people were in critical condition.

    Karachi has been hit by frequent explosions. Enditem