The Sigma Alpha Epsilon fraternity chapter at Clemson University has been placed on probation for two years after the university found that a racially charged party thrown by some of the fraternity’s members violated the school’s conduct codes, according to a statement from the university.

The off-campus “Clemson Cripmas” party in December led to the indefinite suspension of the fraternity chapter by the national Sigma Alpha Epsilon organization. The party also prompted on-campus protests after photos on social media appeared to show attendees dressed as gang members.

A university investigation concluded that the gang-themed party violated the school’s alcohol rules and its code of conduct for student organizations. The probation lasts until February 2017.

The fraternity will also have to complete a “comprehensive risk management program” by the end of April that will cover the topics of “alcohol, social justice, and gangs.”