Train accident in Buenos Aires

An injured passenger is lifted from wreckage by firefighters at Once train station. The city emergency service confirmed so far 550 injured and at least 40 deaths when a suburban train failed to brake and ran into the buffers at the railway terminus. (Damian Dopacio / EPA)

March 23, 2014 1:24 AM PT

A packed train slammed into the end of the line in Buenos Aires’ busy Once station Wednesday, killing 49 people and injuring hundreds of morning commuters in Argentina’s worst train accident in decades.

Firefighters rescue injured passengers from a commuter train that crashed in Buenos Aires. A packed train slammed into the end of the line in Once station, killing dozens and injuring hundreds, according to police. (Leonardo Zavattaro / Associated Press)

An injured passenger is rushed to a hospital in Buenos Aires after the train accident. The city emergency service confirmed so far 550 injured and at least 40 deaths. (Damian Dopacio / EPA)

A helicopter and several ambulances outside Once train station in Buenos Aires after the train accident. (Damian Dopacio / EPA)

Injured people are assessed at the accident site. (Martin Quintana / EPA)

Argentina train accident: Accident scene

A view of the train at the accident site. (Martin Quintana / EPA)

Police and rescue workers transport an injured man on a stretcher after a train crashed at Once train station. (Juan Mabromata / AFP / Getty Images)

Police and rescue workers surround a train that crashed at Once train station in Buenos Aires. (Juan Mabromata / AFP / Getty Images)

Injured passengers from a commuter train wait to be carried away. (Leonardo Zavattaro / Associated Press)

Passengers sit after a train crash at Once train station in Buenos Aires. (Hugo Villalobos / AFP / Getty Images)