Columbia University says it identified two individuals from an “affiliated institution” who took part in disruption of course on the history of modern Israel last week. The students have been barred from entering the campus and referred to their “home institution for further investigation and discipline.

Some of the flyers were quickly crumpled up by students as one peer in the class said, “We don’t want your sh-t.”

The Ivy League university, an epicenter for protests last year, says it is “expediting” its investigation into a group who disrupted a class on Israeli history Tuesday.

The proposal was leaked this week by an anti-Israel student group but was confirmed by the resolution’s author.

A third activist had been identified as a Columbia student on Thursday and has been suspended pending a full investigation and disciplinary process.