Columbia University has suspended 65 students after the campus library was stormed by pro-Palestinian protesters.

More than 80 people are understood to have been involved in the incident on Wednesday, including at least 33 people who are not students at the university.

Masked protesters were seen in standing on tables, beating drums and unfurling banners reading “strike for Gaza” and “Liberated zone” in videos shared on social media.

One person was filmed being handcuffed by a campus public safety officer. New York police eventually arrived in riot gear to clear the demonstration.

A total of 80 protesters were arrested, authorities said, and those involved could be face up to three months in jail. Columbia alumni and students from other universities were among those detained.