Federal agents from the Department of Homeland Security (DHS) searched two Columbia University student residences on Thursday night under warrants issued by a federal magistrate judge but did not arrest or detain anyone.

Columbia University President Katrina Armstrong confirmed the searches in a statement, saying the agents were authorized to enter non-public areas of the university and inspect two student rooms.

“I am writing heartbroken to inform you that we had federal agents from the Department of Homeland Security in two University residences tonight,” Armstrong said. “No one was arrested or detained. No items were removed, and no further action was taken.”

The searches come as part of the Trump administration’s broader crackdown on individuals it claims support Hamas and pose a threat to Jewish students.

The development follows the recent arrest of Mahmoud Khalil, a Columbia student activist who led pro-Palestinian protests on campus last spring. Khalil, a legal U.S. resident, was taken into custody by immigration authorities on Saturday night and is currently being held in Louisiana. He has not been charged with a crime but is scheduled to appear before an immigration judge on March 27.

Trump administration officials have accused Khalil of supporting Hamas, a claim his lawyer, Baher Azmy, has dismissed as “false and preposterous.”

Earlier on Thursday, at least 98 protesters were arrested in the lobby of Trump Tower in New York City while demanding Khalil’s release.

Separately, Columbia University announced on Thursday that students involved in the occupation of Hamilton Hall during last spring’s pro-Palestinian demonstrations have been expelled, suspended for several years, or had their degrees temporarily revoked.