Security officials are looking for a man who calls out to people while masturbating in the driver’s seat of a sedan on the University of Hawaii Manoa campus.

Campus Security said a female student was walking along University Avenue near Maile Way about 10:30 p.m. Tuesday when she passed a parked black sedan, possibly a Volkswagon. A man in the driver’s seat called out to her, and when the student looked at him, she saw him exposed and masturbating, Campus Security said in an alert e-mailed to students on Friday.

The student ran onto campus. She called security when she thought she saw the same vehicle on campus, but the vehicle was driven away before authorities arrived.

Security said the man was light-skinned, in his 20s, 180 pounds, with a heavy build, and black, shoulder-length hair.

Anyone with information about the incident is urged to call Campus Security at 956-6911 or police at 911.