CHAMPAIGN - University police need your help to keep students safe.  A woman was sexually assaulted two weeks ago and the suspect is still on the run.  In Crime Watch tonight, how the attacker was scared away plus his description.  It happened early Sunday Morning, September 13th.  The woman was walking in the 1200 block of S. Fourth Street in Champaign.  She was behind a group of about 10 guys.   One of then stopped, pushed her through a row of bushes and then sexually assaulted her.  Tom Geis with the U of I Police Department says, "He was interrupted by the sounds of some people passing by, this startled him and he fled the scene."  The suspect is described as a white man in his late teens or early 20's.  He's about 5-feet 11-inches tall with short sandy-brown hair and a medium build.  He was wearing a dark shirt and blue jeans.  If you have any information, call Champaign County Crimestoppers at 373-TIPS.  You can also send in a text tip on your cell phone or a web tip .  You don't have to give your name or testify in court and a reward is offered.