Bomb kills 30 in Pakistan's Karachi A CAR bomb in a mainly Shi'ite Muslim area of Karachi has killed at least 30 people, in the deadliest attack in Pakistan's largest city in three years, just two weeks before parliament is due to be dissolved for elections. The blast badly damaged two five-storey residential buildings in the Abbas town area, which is dominated by minority Shi'ites, setting one on fire, but police said the target of the attack was not yet clear. Karachi is plagued by sectarian, ethnic and political violence, with more than 2200 people killed in shootings and bombings last year, but major bomb blasts are relatively rare. "At least 30 people were killed in this bomb blast, three of them were policemen," Fayaz Lughari, police chief of Sindh province told AFP, warning the death toll could rise. More than 50 were injured. Ijaz Ali was on the third floor of one of the blocks of flats with his wife and two sons when the bomb went off on Sunday. "All of a sudden I heard a huge blast and we thought the building was going to collapse - it was like an earthquake," he told AFP from hospital. The windows of my flat exploded towards me, something hit my head and knocked me unconscious. I opened my eyes in hospital and I am just relieved that my family survived. Violence against Shi'ites, who make up about 20 per cent of Pakistan's 180 million population, has reached record levels, raising serious questions about security as the nuclear-armed country prepares for elections due by mid-May. More than 400 Shi'ites were killed in sectarian attacks in 2012, according to rights groups, and two deadly bombings targeting the minority in the southwestern city of Quetta have already killed nearly 200 this year.