The University of California, Irvine has upheld its decision to suspend a campus Muslim group after some of its members disrupted a speech by the Israeli ambassador at a campus event, the Associated Press reports.

However, the university said last week it would lift the suspension of the Muslim Student Union on Dec. 31 instead of enforcing it for a full year.

In addition, the group will be on probation for two years instead of one, and members must complete 100 hours of community service.

Eleven students were arrested in February for disrupting Michael Oren's speech.

Hadeer Soliman, the group's interim vice president, says the punishment will affect hundreds of Muslims who regularly attend prayer meetings and socialize together.