An eight-car commuter train jumped the rails underground at Chicago’s O’Hare International Airport Monday and kept going.
The Blue Line train plowed over the platform and up an escalator in the underground station around 3 a.m. Monday morning.
Police said 32 people on board the train were injured. It is unclear how many were on board, but the Chicago Transit Authority (CTA) estimates it is the “lowest ridership time.” No one suffered any life-threatening injuries.
The cause of the derailment is unclear. Security footage is being reviewed by the CTA and fire department officials.
"We will be looking at equipment. We will be looking at signals. We'll be looking at the human factor and any extenuating circumstances," CTA spokesman Brian Steele said. "But really at this point, it's far too soon to speculate."
"Apparently (it) was traveling at a rate of speed that clearly was higher than a normal train would be," Steele added.