CHICAGO (WLS) -- CTA Blue Line trains are now running after service was temporarily stopped between the O'Hare and Rosemont stops.
The Chicago Fire Department responded to a HazMat call at the O'Hare train platform involving a possible smell of ammonia, according to the Chicago Department of Aviation. Around 9 a.m. Thursday, fire officials evacuated the platform and suspended train service between the two stops.
Passengers were being transported via bus service to and from Rosemont.
(FILE) A CTA Blue Line train to O'Hare. (AP Photo/Charles Rex Arbogast)