Columbia University has announced the expulsion and suspension of several students involved in the takeover of Hamilton Hall during pro-Palestinian protests last spring. The university also temporarily revoked the diplomas of some graduates who had participated in the demonstration.

In a campus-wide email sent Thursday, Columbia stated that its judicial board determined sanctions for dozens of students based on an “evaluation of the severity of behaviors.”

“The outcomes issued by the UJB are based on its evaluation of the severity of behaviors at these events and prior disciplinary actions,” the statement read. “These outcomes are the result of following the thorough and rigorous processes laid out in the Rules of University Conduct in our statutes, which include investigations, hearings, and deliberations.”

The university did not disclose specific numbers regarding how many students were expelled, suspended, or had their degrees revoked.

The disciplinary measures follow a months-long investigative process and come amid heightened tensions on campus after federal immigration authorities arrested prominent student activist Mahmoud Khalil last Saturday—an action that President Donald Trump described as the “first of many.”

On Thursday night, federal immigration agents visited an apartment near the Columbia University campus, searching for a woman who was not present, according to law enforcement sources. The sources indicated that this was part of a broader crackdown by the Trump administration against individuals it claims support Hamas and pose a threat to Jewish students.

The administration has also stripped Columbia of over $400 million in federal funding, citing the university’s alleged failure to address antisemitism on campus. Congressional Republicans have specifically criticized Columbia for not disciplining students involved in the Hamilton Hall occupation.

The takeover of Hamilton Hall on April 30, 2024, was an escalation of earlier protests against Israel’s military actions in Gaza. Protesters barricaded themselves inside using furniture and padlocks, prompting the university to request intervention from the New York Police Department. The following night, hundreds of officers entered the occupied building through a window, arresting dozens.

By June, the Manhattan District Attorney’s Office announced it would not pursue criminal charges against 31 of the 46 individuals arrested for trespassing, citing a lack of evidence of property damage and the fact that none of the students had prior criminal records. However, those arrested still faced university disciplinary hearings, with potential expulsion on the table.

More than a dozen protesters were offered deals that would have resulted in their charges being dismissed, but they refused, according to organizers, “in a show of solidarity with those facing the most extreme repression.” Most of those individuals were alumni, though two were current students, prosecutors said.

On campus, tensions remain high, with many students fearful of speaking out. “We know that what we say on the record could have long-term consequences,” one student said. “But what we do feel comfortable sharing is that we believe the administration is failing us and creating a climate of fear.”