Listeners to one program last month on Montclair State University’s student-run radio station, WMSC, may have been missing most of the action, according to university officials who this week said they had begun an investigation into whether raunchy videos had been filmed in the studio while the show was in progress.

Today’s issue of The Record, a New Jersey newspaper, reports that the videos featured naked women, lap dancing, and oral sex. The images, which appear to have been shot in the studio, were posted on Web sites of a WMSC disc jockey and on MySpace, the social-networking site.

The show was canceled this week, after a parent complained, and the university is now trying to determine if any of the people in the videos are students, and if the images were filmed on university property. Minne Ho, a spokeswoman for the university, told The Record that students could be expelled if their behavior is found to detract from “the core mission of the university.”

The controversy is the second this year involving a media outlet at Montclair State. In January the student government blocked funds for The Montclarion, a student newspaper, in a dispute over access to closed meetings of the government. The dispute was settled by an agreement to formally separate the newspaper from the government. The radio station, which is also under the authority of the student government, could also end up separated from it, said Ms. Ho. —Andrew Mytelka