Man punched during robbery on CTA Red Line train on North Side, Chicago police sayCHICAGO (WLS) -- Chicago police sent out a warning Wednesday after a man was robbed on the CTA Red Line earlier this week. Police said a suspect approached another man riding on a Red Line train early Sunday morning near the North/Clybourn station. The suspect was allegedly yelling and swearing before punching the victim and robbing him, Chicago police said. Investigators say the victim followed the suspect off the train, where police say he was punched again. Following a number of recent incidents of violence on the CTA, a group of pastors prayed outside the Forest Park CTA Blue Line station on Wednesday.