Chicago firefighters evacuated an inbound CTA train near Rosemont after the train caught fire.
CTA spokeswoman Lambrini Loukidis said a fire broke out underneath a train headed toward Chicago shortly before 9 p.m. The Blue line train had just left O'Hare and was approaching Rosemont.
She said the eight-car train was carrying about 80 people at the time the fire was discovered. She said fire was quickly extinguished, while firefighters evacuated passengers.
The passengers were then herded onto shuttle buses to take them to the Jefferson Park station, which temporarily was the end of the line while firefighters tended to the fire.
Shuttle buses were also available to take outbound passengers from Jefferson Park.
There were no injuries. The fire is still under investigation.
The Chicago Fire Department officials could not be reached for comment.