A fraternity at Auburn University in Alabama has been suspended for at least four years over sustained allegations of alcohol and physical abuse.

The school launched an investigation into the Delta Zeta chapter of Beta Theta Pi fraternity in September after it received a report of possible misconduct, news outlets report.

The chapter was found to have violated the school’s code of conduct, anti-hazing policy and student organization social event policy, according to a school statement.

“The activities that led to this result were serious and included alcohol, physical abuse and servitude, many or all of which spanned several years and defied multiple interventions from the university, alumni and General Fraternity,” a fraternity statement reads.

The chapter was started in 1964 and had about 164 undergraduate members at the time of its closure, said Martin Cobb, the fraternity director of communication in the statement.

The suspension appears to have first been reported Monday by the school’s newspaper, The Auburn Plainsman.

The fraternity has until Dec. 31 to vacate its house. It can request reinstatement beginning in August 2023.