Chicago police say a man sexually assaulted a woman as she walked through the Loop on Friday afternoon, but the attack took an unexpected turn when another woman allegedly stabbed the assailant in the eye before officers arrived. A second man who intervened in the confrontation was also cut during the chaos, according to police.

Crime scene tape surrounded the entrance to theWit Hotel at 201 North State Street, where the attack unfolded shortly after 4 p.m., according to witnesses.

Police said a 24-year-old woman was walking on the sidewalk when a 31-year-old man sexually assaulted her. The suspect then became involved in a physical altercation with a 25-year-old man who intervened, CPD said. As the two men fought, a 36-year-old woman at the scene allegedly pulled out a knife and stabbed the suspected assailant in his right eye. She also cut the other man on his left wrist, according to police.

The sexual assault victim and both men were transported to Northwestern Memorial Hospital. Officers recovered a knife at the scene. Detectives are continuing to investigate the circumstances surrounding the incident and are working to determine what charges are appropriate.