A report of someone possibly being on the tracks at a Blue Line subway stop this evening turned out to be unfounded, a CTA spokesman said.
Crews were called to the Jackson Blue Line stop, 314 S. Dearborn St., about 7:45 p.m., according to the Chicago Fire Department's news office.
A train operator had thought a person might have been brushed by the train the operator was running, and so the operator stopped and alerted the fire department. But neither the fire department nor CTA officials could find any evidence of anyone on the tracks, said CTA spokesman Brian Steele.
Blue Line trains experienced delays because of what the CTA said in a Twitter message may have been a "medical emergency" at the Jackson stop, but service resumed a few minutes later, according to the CTA.