An overcrowded train jumped the tracks in southern Bangladesh on Saturday, killing at least three passengers and injuring more than 100 others, a railway spokesman said. The Probhati Express _ with many passengers riding atop the carriages _ was bound for the capital, Dhaka, from the port city of Chittagong, 220 kilometers (135 miles) to the southeast, when five of the rear cars went off the rails. Bangladesh Railway spokesman Shafiqul Alam said three bodies had been found and at least 100 people were injured. Rescuers were still searching for more possible causalities, he was quoted as saying by the Associated Press.