SYCAMORE – On the eve of the election, DeKalb County State’s Attorney Clay Campbell asked state police to investigate the Northern Illinois University Police Department for withholding evidence favorable to an NIU officer accused of raping a student.

A judge ruled Friday that NIU police intentionally hid statements from witnesses who said the alleged victim told them she had a consensual sexual relationship with then-NIU police officer Andrew Rifkin. Rifkin’s defense attorney asked Judge Robbin Stuckert to throw out the charges because of it; Stuckert is expected to announce her decision Friday.

Campbell did not attend Friday’s hearing, but said that after reading the transcript, he decided NIU police’s conduct warranted an outside investigation. He is asking state police to target NIU Police Chief Don Grady and the entire police department.