KARACHI - Muttahida Qaumi Movement (MQM) chief Altaf Hussain has called upon the government to arrest the culprits responsible for the blast on Kirani Road in Quetta.  He also expressed sympathies to the families of the people killed in the Kirani Road blast, said a statement issued by the MQM here on Sunday. He said that the law-enforcing agencies should move against the terrorists and flush them out of their hideouts.