A car bomb exploded in a bus station in this central Iraqi city on Sunday, wounding at least 20 people, a police official said. Police spokesman Rahman Mahawi said the blast happened at about 1:30 p.m. (1030GMT) in Karbala's main Bab Baghdad bus station, a crowded terminal in the downtown area of the city located 80 kilometers (50 miles) south of Baghdad. Mahawi said 22 people were injured in the blast.