New York police arrested dozens of pro-Palestinian protesters Wednesday after they occupied Reading Room 301 of Columbia University’s Butler Library.

The university called in the NYPD when demonstrators refused to leave or identify themselves. Officials highlighted safety concerns and the engagement of non-affiliated parties. Two campus security officers were hurt during a mob rush, BBC reported.

Online videos showed masked demonstrators entering the library and screaming slogans. Columbia has warned students that they may face disciplinary action for breaking campus policies.

Mayor Eric Adams said the arrests were made at the university’s request, affirming support for peaceful protest but not trespassing. Governor Kathy Hochul praised law enforcement and condemned campus disruption, according to BBC.

The Trump administration has warned 60 universities that funding may be withdrawn if antisemitism charges on campuses are not addressed.