The University of Kansas has ordered two years of probation for a fraternity that was the focus of a sexual assault investigation.

Kappa Sigma is barred from having alcohol in its chapter house and must turn over materials to investigators and offer sexual assault prevention training.

The Kansas City Star reports that the university imposed the sanctions Wednesday after an investigation into reports that women were sexually assaulted during some type of gathering at the Kappa Sigma house on Sept. 26 and 27. The investigation found that the fraternity had violated a student code, although the university didn’t offer specifics.

Vice public affairs chancellor Tim Caboni said “significant and substantial sanctions” were placed on the fraternity because of the “seriousness and disturbing nature” of what happened.