CTA Blue Line train service resumes between Rosemont and O'Hare

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.