Pakistan blast hits Shia procession - 28 Dec 09

A suicide bomber has blown himself up in Karachi. The attack happened during a procession of Shia Muslims on their holiest day. Citizens unleashed their anger on buildings, shops and cars, setting them ablaze, and attacked local police. Paramilitary forces have now taken control, and officials are appealing for calm, but already 30 people are dead, and more than 80 others injured. Al Jazeera's Roza Ibrahimova reports.