FARGO -- North Dakota State University officials are investigating a skit in which a black-faced white student portrayed Barack Obama receiving a lap dance.

Presidents of the NDSU Saddle and Sirloin Club and sorority Alpha Gamma Delta publicly apologized for the skit at an NDSU town hall meeting this week.

NDSU says a hearing officer will decide whether the groups should be punished.

Those in the audience said a member of the club dressed as a woman from the Internet video "I Got a Crush on Obama" and performed for another student who was wearing dark makeup and an afro wig.

The Fargo Forum, citing people who attended the performance, reported that in the background were two male students dressed as cowboys simulating anal sex while holding an Obama sign that one student ripped when the 30-second skit ended.

Club President Jenna Schmidt said the students were trying to reenact a YouTube video and did not mean to be offensive.

Obama is to speak at the state Democrats' convention in Grand Forks next week.

ASSOCIATED PRESS