KARACHI, JANUARY 24: A senior police official has been suspended following last week's bombing in Pakistan's troubled city of Karachi that killed eight people and injured 22, officials said Monday. A D Khwaja, a senior superintendent, was suspended after the bomb exploded in Karachi's downtown Arambagh Road, the Associated Press of Pakistan said. The police official faced various charges of incompetency and irregularity, the agency said. A spokesman for the governor of southern Sindh province told the agency an investigation was underway. The country's leading Urdu-language newspaper, Jang, said on Sunday that Khwaja was sacked after he refused to implicate political leaders in the blast and to take action against two police officials. "He was suspended on the basis of wrong information provided by a group of officials to the higher authorities," it said. More than 4,000 people have died in political, ethnic and sectarian violence during the last four years of unrest here. The city itself has remained a permanent irritant for the successive governments due to law and order situation.