A man seized by U.S. forces in Libya accused of involvement in an attack that killed the U.S. Ambassador in Benghazi in 2012 is a Syrian who had links to the suspected ringleader, Libyan military officials said on Tuesday.

U.S. special forces captured Mustafa al-Imam in the past few days and he is being transported to the United States, U.S. officials said on Monday, without giving more details.

Speaking on condition of anonymity, eastern-based military officials told Reuters Imam was believed to be a Syrian national aged between 35 and 40.

He was captured near Misrata, the country’s third-largest city located some 190 km east of the capital Tripoli, said Mohammed al-Ghasri, spokesman of the defense ministry of the U.N.-backed government in Tripoli.

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