Policemen walk near the rail crossing where a passenger train crashed into a bus in Dolores, Buenos Aires province March 9, 2008. A train crashed into a bus in Argentina early on Sunday, killing 18 people and injuring about 45, local media reported. "It seems the driver of the bus passed when the barrier was down and the train cut the bus in half," Daniel Scioli, the provincial governor, told local television at the crash scene. (Xinhua/Reuters Photo)

At least 18 people were killed and about 50 others injured in a train-bus collision in Argentina early Sunday, authorities said.

The accident happened around 2:00 A.M. (0400 GMT) local time when a train crashed into a bus at a rural Argentine rail crossing near Dolores, about 200 kilometers south of the Argentine capital of Buenos Aires, the official Telam news agency reported.