Police are talking to three men suspected of beating and sexually assaulting a woman on New Year's Eve.
The victim, an 18-year-old woman, is in a coma.
Police say she was turned away from a concert at the Congress Theatre and approached by six men shortly afterward.
Witnesses say she was found naked and bleeding at about 9:30 p.m. in the 2100 block of North Rockwell, which is right around the corner from the theatre.
The three suspects were held by security guards until police arrived and took them into custody.
Anyone with information is asked to call the Area Four Detective Division at 312-746-8252.