Three members of the Sigma Alpha Epsilon fraternity at Utah State University have been expelled for sexual misconduct, and chapter president Eric Carey says a fourth will be the subject of an internal investigation.

The expulsions stem from an incident at the fraternity house on March 11 that was reported to police as a rape two days later. However, police said the Cache County Attorney's office had decided there was insufficient evidence to file charges.Officials from the fraternity's national organization spent two days on campus last week gathering information about the incident, but no decision had been made at the national level regarding the chapter or individual members, Carey said Friday.

Val Christensen, USU vice president for student services, said the university's standards committee also would hear the cases against the people involved and look into the status of the SAE chapter.

Carey said that under the fraternity's national bylaws, expelled members must forward their badges to national headquarters and refrain from associating with other members.

He said the local decision can be overturned only by the national organization.

Police Lt. Randy Auman said that while he did not disagree with the investigation's findings, he was "very sympathetic with the victim and I see the incident as a very serious one."