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'Moment Chicago train derailed' injuring over 30

A video purporting to show the moment a train derailed in Chicago, injuring over 30 people, has been posted online.

The clip shows two people talking next to escalators before the train overshoots the track and misses the bystanders by metres.

The cause of the derailment remains unclear but a Chicago Transit Authority official said "speed could be a factor."

Cause of Chicago train derailment remains unclear

Investigators have said they are still to determine what caused a commuter train to jump from the track and mount a platform escalator in a spectacular derailment at Chicago's O'Hare International Airport.

The eight-car train derailed at 3:00am local time after failing to stop at the airport's underground station.

Chicago Fire Department Commissioner Jose Santiago said the operator was "walking and talking as we were investigating" the cause of the crash.

A total 32 people on board the train were injured, though no one suffered life-threatening injuries.

She was among the 32 injured who were taken to hospital after suffering minor leg injuries. It remains unclear whether the derailment was caused by mechanical or operator error.

The injured passengers were taken to four hospitals across the city.
The station at O'Hare International Airport, which is one of the busiest in the US, has been closed.

Chicago train 'ran through bumper at end of the track'

The National Transportation Safety Board (NTSB), which has launched an investigation into the derailment of a train at Chicago's O'Hare station, tweeted:

'Speed could be a factor' in Chicago train derailment

A Chicago Transit Authority (CTA) official has said "speed could be a factor" after a train derailed at the city's O'Hare station:

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