SYCAMORE – Northern Illinois University police clearly withheld information in a case involving a former officer charged with sexual assault, a judge said Friday.

During a hearing at the DeKalb County Courthouse, the attorney for Andrew Rifkin, 24, of the 3500 block of Meadow Street in Northbrook, argued that NIU police didn’t provide the DeKalb County State’s Attorney’s Office with two witness statements or make reports after speaking to those witnesses as is required.

Rifkin pleaded not guilty in January to criminal sexual assault by force. If convicted, he faces up to 15 years in prison. He was indicted on the charge in December 2011.