A former college administrator, a former Christian bookstore owner and a former policeman admitted to sexual misconduct with a teenage boy.

They were among five men arrested in March as part of an ongoing investigation of men who meet boys through Internet chat rooms, authorities said.

William Gillin, 53, and Paul Skiles, 63, both of Johnstown, pleaded guilty yesterday to corruption of minors, indecent assault and unlawful communications with minors. Mr. Gillin is the former alumni relations director at the University of Pittsburgh at Johnstown. Mr. Skiles owned the now-closed B&K Christian Bookstore in Richland Township.

Some of the incidents occurred when the boy was 16, prosecutors said. He is now 17.

Jeffrey Haire, a former part-time police officer at the university and security guard at Johnstown Memorial Medical Center, pleaded guilty to corruption of minors. Prosecutors said his encounter with the boy occurred when the victim was 17.

Cases against two other men are pending, prosecutors said.