The CTA Red Line was temporarily shut down Sunday evening on the North Side.
The train service was shut down around 7:26 p.m. between the Howard and Belmont stops after a suspicious item was located on the Wilson CTA platform, officials said.
ABC7 Chicago is now streaming 24/7. Click here to watch
The Chicago police bomb squad investigated the item, CPD told ABC7. It was not yet known if there was a legitimate threat.
Red Line trains have now returned to normal operations, ABC7 was told around 8:30 p.m.
Shuttles had been requested to help train passengers get to their destinations during the disruption, CTA said.
No further information was immediately available.