A woman suffered multiple rib fractures Tuesday evening after an unidentified person pulled and threw her to the ground aboard a CTA Red Line train, Chicago police said.
The attack happened at about 10:40 p.m. on Tuesday in the 1200 block of North Clark Street, police said.
Anyone with information is asked to call detectives at 312-745-4447 or submit an anonymous tip at CPDTIP.com using reference number JK423622.