TRENTON, N.J. (AP) — A New Jersey man detained for months in Ethiopia on allegations of supporting Islamic militants before being allowed to come home sued the FBI agents involved in his interrogations.

Amir Mohamed Meshal, who was held nearly four months in Ethiopia, claims his constitutional rights were violated when U.S. agents carried out interrogations in the hunt for al-Qaida in the Horn of Africa.

Meshal, of Tinton Falls, said he was questioned by FBI agents more than 30 times. He said the agents threatened him with torture and death, and that he was never allowed to talk to an attorney or contact his family.

In May 2007, he returned to New Jersey, where he was born and raised.

According to the lawsuit, filed Tuesday by the American Civil Liberties Union in Washington, Meshal was studying Islam in Mogadishu, Somalia, when violence erupted and he tried to leave the country. Meshal said he was arrested by Kenyan police.

In Kenya, Meshal said he was held in a cramped cell for days wearing only his underwear and was interrogated by two FBI agents who accused him of receiving weapons training at an al-Qaida camp in Somalia — a charge he denies. He was then sent to Ethiopia.

U.S. authorities in Washington have said they had interviewed Meshal in Kenya and that they determined he was not a threat and had not violated U.S. law. The State Department also said it formally protested his deportation from Kenya to Ethiopia.