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.

Scores of people poured into the lobby of Trump Tower in New York City on Thursday to protest the arrest and detention of Columbia University student Mahmoud Khalil, whom the Trump administration aims to deport over his pro-Palestinian activism.

Columbia University has expelled some students for occupying Hamilton Hall last spring, school officials announced Thursday. In a university-wide email, Columbia said that the outcomes of a months-long investigation also included multi-year suspensions and the temporary revoking of other students’ degrees.

Columbia University on Thursday said it had doled out a range of punishments to students who occupied a campus building last spring during pro-Palestinian protests.

Columbia University says it has expelled or suspended some students who took over a campus building during pro-Palestinian protests in Spring 2024 and temporarily revoked the diplomas of some students who have since graduated.

Columbia University says it has suspended or expelled some students who took over a campus building during pro-Palestinian protests in the spring of 2024. The university says it has also temporarily revoked the diplomas of some students who have since graduated.

Immigration enforcement agents on Saturday arrested and detained Mahmoud Khalil, a legal U.S. resident and Palestinian activist.