NEW YORK (AP) — The White House complained Tuesday that Columbia University is refusing to help federal agents find people being sought as part of the government’s effort to deport participants in pro-Palestinian demonstrations, as the administration continued to punish the school by yanking federal research dollars.

Immigration enforcement agents on Saturday arrested and detained Mahmoud Khalil, a legal U.S. resident and Palestinian activist who played a prominent part in protests at Columbia last year. He is now facing possible deportation.

President Donald Trump has vowed additional arrests. In a briefing with reporters in Washington, White House press secretary Karoline Leavitt said federal authorities have been “using intelligence” to identify other people involved in campus demonstrations critical of Israel that the administration considered to be antisemitic and “pro-Hamas.”

She said Columbia had been given names and was refusing to help the Department of Homeland Security “to identify those individuals on campus.”

“As the president said very strongly in his statement yesterday, he is not going to tolerate that,” Leavitt said.

A spokesperson for Columbia University did not directly respond to a message seeking comment.