The worker, 47, left her booth to use the restroom across the platform at the station at 800 N. Milwaukee Ave. around 5 a.m. Wednesday. As she left the restroom, a man standing by the door asked her for the time, then shoved her back into the restroom and onto the floor and began choking her, according to police.
Officers responding to a 911 call found the woman inside her booth, crying and traumatized but with no apparent physical injuries. CTA spokeswoman Catherine Hosinski said the worker declined medical attention and went home for the day.
Police described the attacker as black, between 28 and 32, 5-foot-8 to 5-foot-11 and weighing 170 to 200 pounds, police said. He had a Afro hairstyle and was wearing a white tank top and blue jeans.
Police planned to review cameras mounted on the ceiling of the CTA platform.