Columbia University says it has expelled or suspended some students who took over a campus building during pro-Palestinian protests last spring, and had temporarily revoked the diplomas of some students who have since graduated.

Department of Homeland Security agents had judicial warrants to conduct the searches, according to Columbia’s interim president.

Columbia Interim President Katrina Armstrong said Thursday that the agents had search warrants and no one was arrested or detained in the student resident search.

In an email, Interim President Katrina Armstrong wrote that she was “heartbroken” to inform students and faculty of the federal agents’ visit. The students were not arrested or

Lawyers for Mahmoud Khalil, arrested for pro-Palestinian protests, face off with feds seeking his deportation in court today. Newsweek's live blog is closed.

Khalil will remain detained in Louisiana until at least next week following an initial court hearing in New York on Wednesday over the Trump administration’s plans to deport him for his role in pro-Palestinian protests at Columbia University.