Amy Greer, his attorney, said her client is a legal permanent resident with a green card and married to an American citizen, who is eight months’ pregnant.

When ICE agents arrived at the campus building on Saturday, they also threatened to arrest Mr Khalil’s wife, according to the lawyer.

Mr Khalil was initially taken to an immigration holding facility in New Jersey, according to ICE’s online locator. But when his wife tried to visit on Sunday, she was told he was not there, according to his lawyer.

The system indicated on Monday that Mr Khalil was being detained at a facility in the town of Jena, Louisiana.

A spokesperson for the Department of Homeland Security said that Mr Khalil had been taken into custody “in support of President Trump’s executive orders prohibiting antisemitism”.