University Police Chief Kevin Hay said a student reported witnessing a man masturbating on the sixth floor of Gelman Library May 3, but the department’s investigative unit did not have sufficient evidence to pinpoint the individual.

The female student called UPD a few hours after the incident occurred, at about 4 p.m., Hay said. She saw a man “reaching into his pants and masturbating while at a computer in Gelman Library.”

“She did use her phone to record a few frames of video and called us several hours later from her residence hall,” Hay said. “When we checked out the location, there was no one in the area who met the description.”

Hay said UPD’s investigations unit determined the images were insufficient for officers to identify a suspect.