India, March 27 -- US Department of Homeland Security agents reportedly detained a Turkish national and doctoral student at Tufts University without any explanation, her lawyer said. A video of masked people handcuffing Rumeysa Ozturk, 30, has surfaced on social media.

"We're the police," members of the group of about six people say in the video obtained by The Associated Press.

Why are you hiding your faces?" a man asks.

Ozturk's lawyer Mahsa Khanbabai said in a petition filed in Boston federal court that her client had left her home in Somerville Tuesday night, March 25, when she was stopped. Ozturk, who is Muslim, was meeting friends for iftar, the lawyer said.

"We are unaware of her whereabouts and have not been able to contact he...