Pro-Palestinian protesters who stormed Columbia University’s library have been banned from campus.

A source told The Telegraph that 56 or more of the 70 students involved in the incident would not be allowed to return.

The bans will last for between one and three years, the New York Post said.

All 70 students involved in the unrest were formally disciplined on Monday, it is understood. Some of them had their degrees revoked or were permanently expelled, according to a statement on the university’s website.

The incident took place in May, with masked and hooded protesters swarming the New York-based university’s library and refusing to leave.