Chicago Police were called about what turned out to be a false report of a gunshot Thursday morning at the Chicago CTA Red Line station on the Near North Side.

Officers were called after someone reported hearing a gunshot about 8 a.m. at the station at 800 N. State, according to Chicago Police. The sound actually turned out to be a slamming door.

CTA spokeswoman Irene Ferradaz said the incident had no effect on service.