WASHINGTON (AP) — The Obama administration for the first time on Friday identified two militant groups in Libya, including one led by a former Guantanamo Bay detainee, as being allegedly involved in the attack in Benghazi that killed Ambassador Chris Stevens and three other Americans.

The department designated the two branches of the Ansar al-Sharia in Libya, those in the cities of Derna and Benghazi, and a third branch in Tunisia as foreign terrorist organizations.