Federal agents arrested Palestinian activist Mahmoud Khalil in New York

Federal agents arrested Mahmoud Khalil, a Palestinian activist and Columbia University graduate student, in a video released on Friday. The arrest occurred in his apartment building lobby, alarming free-speech advocates and his pregnant wife, Noor Abdalla. Khalil, a lawful U.S. resident, had his permission to stay revoked due to his involvement in pro-Palestinian protests. The Justice Department is investigating whether Columbia University concealed illegal immigrants on campus, coinciding with Khalil's arrest. Khalil's lawyers have challenged his detention, detailing his transfer from New York to a detention center in Louisiana. He expressed concern about missing the birth of his first child and the impact on his ability to advocate for Palestinian rights.