Argentina : At least 11 people have died in Argentina after a train slammed into a bus crossing the tracks and then hit a second train coming into a station.
More than 200 people were injured, some seriously, a police spokesman said.
The crash happened during the morning rush hour as hundreds of commuters were waiting at the station in Flores, a Buenos Aires suburb.
Officials are investigating reports the bus driver, who is among the dead, failed to heed a stop signal.
Fire chief Omar Bravo said the collision was "one of the worst and saddest accidents of recent years" in Argentina. Many rail lines go through residential areas of Buenos Aires, and it is not unusual to see drivers or pedestrians ignoring the warning signs of an oncoming train, says the BBC's Vladimir Hernandez in Buenos Aires.
The accident happened at about 06:00 local time (09:00 GMT) on the Sarmiento line, which connects the centre of Buenos Aires with the western suburbs.
The impact smashed the bus into the train station where it was crushed against a platform by the locomotive.
The front of the train was derailed and hit another train that was leaving the station in the opposite direction.According to the Argentine newspaper Clarin, firefighters took two hours to remove one of the train drivers who was trapped in the wreckage.