Authorities are asking for help locating a University of Portland student who went missing Sunday evening.

Owen Klinger, 18, was last seen on the University’s campus in North Portland. He was spotted leaving his residence hall around 7:30 p.m. in a light blue sweatshirt, jeans and a black drawstring backpack.

Klinger has shoulder-length brown hair and brown eyes. He’s 6-foot-1 and weighs 165 pounds.

Owen Klinger

Owen Klinger

Courtesy of the family

His roommate told the university newspaper that Klinger is typically back in his dorm room by 11 p.m., but never returned Sunday.

Owen’s mother, Mary Klinger, said it’s unusual for her son to go so long without communicating.

“I know it hasn’t been that much time that he’s been out of touch, but it’s not like him,” Owen’s mother told KGW Tuesday. “We need help to find him.”

She also said the school had told her that Owen’s phone was active at 8:30 p.m. that evening near a TriMet bus stop on the edge of campus. Volunteers have also been canvassing the bus route to see if anyone riding the bus saw her son, she said.

Michael Lewellen, a spokesperson for the university, said the school had no new information, and the case was now fully in the hands of law enforcement authorities.

“Our UP community continues to hope and pray for Owen’s safe reuniting with his family, friends and fellow students,” he said in a statement.

Authorities are asking for anyone with information to call 911 immediately.