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US immigration authorities arrested a Palestinian activist who helped lead Columbia University’s pro-Palestine encampment movement, his lawyer told the Associated Press.

Mahmoud Khalil was arrested at his home on Columbia’s Manhattan campus by several Immigration and Customs Enforcement (ICE) agents, who informed his lawyer that they were acting on a State Department order to revoke Khalil’s student visa.

When Khalil’s attorney, Amy Greer, informed the agents that he held a green card, they said they were revoking that too.

Khalil has been transferred to an ICE facility in New Jersey. His wife, who is eight months pregnant, has not been informed about the reasons for his arrest.

Khalil’s arrest comes after the Trump administration threatened to crack down on pro-Palestinian protests in the US, vowing to deport foreign students and imprison “agitators”.

On Friday, the administration announced it would slash $400m in grants and contracts to Columbia University, accusing the institution of failing to crack down on antisemitism.