A Pro-Palestinian protest unfolded at Barnard College in New York City on Wednesday, where a small group “forcibly entered” a campus hall and allegedly physically assaulted a school employee, college officials said.

An employee was sent to the hospital after being assaulted by the protesters, Robin Levine, Barnard’s vice president for strategic communications, said in a statement, without offering further details.

It was the second time the Transport Workers Union called out Columbia University and its affiliates for not doing enough to keep its members safe.