Cause of CTA derailment near O'Hare station probed

Chicago Transit Authority officials are investigating what caused a Blue Line derailment Wednesday evening between Rosemont and O'Hare International Airport.

The Chicago Fire Department evacuated a Blue Line train with 73 passengers and took a 39-year-old woman with a back injury to Presence Resurrection Medical Center in Chicago.

Service between the Rosemont and O'Hare stations was suspended for about seven hours after the derailment that occurred around 7 p.m. as the train was heading into the airport stop.

Trains continued to operate between Rosemont and Forest Park stations, and the CTA provided shuttle buses between O'Hare and Rosemont.

No CTA employees were injured, and the female passenger was in stable condition.