Department of Homeland Security officials conducted the search as the Trump administration sought to deport a former student and pro-Palestinian activist.

Ranjani Srinivasan’s student visa was revoked on March 5 for “advocating for violence and terrorism,” the Homeland Security Department said in a statement Friday.

Agents with the Department of Homeland Security searched two university residences with a warrant Thursday evening. No one was arrested and it was unclear whom the authorities were searching for.

The Trump administration delivered an ultimatum to leaders of Columbia University: Make a series of major changes or lose out on billions in federal aid.

The Trump administration has sent a letter to Columbia University’s interim president and board of trustees that includes a list of demands the school must meet if it wants the administration to reverse its cancellation of $400 million in federal funds Columbia was authorized to receive.

The Trump administration has delivered an extraordinary ultimatum to Columbia University, threatening to permanently end federal funding to the school unless it cedes control of an international studi