The US government has alleged that Columbia University student and pro-Palestinian demonstrator Mahmoud Khalil withheld that he worked for a United Nations Palestinian relief agency (UNRWA) in his visa application, saying that should be grounds for deportation, AFP reports.

A judge has ordered Khalil not to be deported while his lawsuit challenging his detention, known as a habeas petition, is heard in another federal court. Khalil, a native of Syria and citizen of Algeria, entered the US on a student visa in 2022 and later filed to become a permanent resident in 2024.

In a court brief dated Sunday, the US government outlined its arguments for keeping Khalil in custody while his removal proceedings continue, arguing first that the US District Court in New Jersey, where the habeas case is being heard, lacked jurisdiction.

The brief also says Khalil “withheld membership in certain organisations” which should be grounds for his deportation.

It references a March 17 document in his deportation case that informed Khalil he could be removed because he failed to disclose that he was a political officer of UNRWA in 2023.