At least two persons were killed while another five injured in a roadside bomb blast in Ibrahim Khel locality in Kohat district on Sunday morning. Police sources said a 10-kg bomb planted on a roadside went off all of a sudden, killing two persons and injuring five others in Ibrahim Khel Village in Kohat. The bomb ripped through a passenger pickup van, which was passing closely with seven persons onboard. Two among them died on the spot who have been identified as Shah Wali and Nasir. The injured have been shifted to hospital. Two among them have been declared in critical condition, hospital sources said. Security forces and political administration have placed strict cordon around the blast site.