Federal immigration agents have detained a Columbia University student in her campus apartment. But hours after she was taken into custody on Thursday, the student was released, after New York City Mayor Zohran Mamdani expressed concerns about the arrest to President Donald Trump. The agreement followed an unrelated meeting between the Democratic mayor and Republican president. Attorneys for the student said ICE agents had entered her campus apartment under the guise of searching for a missing person. A spokesperson for the Department of Homeland Security said the woman's visa was terminated in 2016 for failing to attend class. Her attorneys didn't immediately respond to a request for comment.