On April 24, 2017 at approximately 4:30 a.m., a 28-year-old female was walking eastbound on the 7900 block between S. Michigan & Wabash, when an unknown offender approached her from behind and forced her into the alley. The offender then displayed a knife and dragged the victim to the rear of the 7800 block of South Michigan where he sexually assaulted and robbed her.  For more information click here.