Civil rights groups have filed a lawsuit over alleged human rights abuses at the United States' largest immigration detention centre.

Immigrant detainees accuse the federal government of 'inhumane' abuse and treatment at Camp East Montana in El Paso, Texas.

“The conditions here in this ICE tent camp in a desert are inhumane and cruel," said one Cameroonian plaintiff in the suit. "No human being should ever have to go through this."