The U.S. Justice Department is examining whether student protests at Columbia University over the Gaza war violated federal terrorism laws, Deputy Attorney General Todd Blanche said on Friday.

The US Justice Department is investigating whether individuals involved in the pro-Palestinian protests at Columbia University last year violated federal anti-terrorism laws, Deputy Attorney General Todd Blanche announced Friday.

The U.S. Justice Department is investigating whether Columbia University concealed “illegal aliens” on its campus, one of its top officials said Friday, as the Trump administration intensified its campaign to deport foreigners who participated in pro-Palestinian demonstrations at the school last year.

According to the sources, it was part of the Trump administration’s crackdown on individuals it has described as espousing the views of Hamas.

The Department of Homeland Security said a Columbia University student who had her student visa revoked self-deported. Another Palestinian student was arrested for overstaying her expired visa.

Columbia said it had temporarily revoked the diplomas of some students involved in pro-Palestinian demonstrations.