In Pakistan, thousands of mourners have attended funerals for those killed in a double bomb attack yon Friday targeting Shia Muslims in the city of Karachi. The death toll from the bombings rose overnight to 33, with 165 injured. A police official said more then 10,000 people had attended a funeral for 14 Muslim victims. Five Christians are to be buried later. Security was tightened in Karachi as the mourners gathered. The first blast was caused by a motorbike laden with explosives targeting a bus carrying Shias to a religious procession. Then, another bomb exploded outside the entrance to the emergency ward of Jinnah hospital, where the victims of the first attack were being treated. The bombings happened in spite of tight security across Pakistan as Shias marked the end of the Arbaeen religious festival, with Friday the final and most important day of 40 days of mourning for the Prophet Muhammad's grandson. No group has claimed responsibility for the attacks.