(Fox News) -- Intelligence sources tell Fox News they are convinced the deadly attack on the U.S. Consulate in Benghazi, Libya, was directly tied to Al Qaeda -- with a former Guantanamo detainee involved.
That revelation comes on the same day a top Obama administration official called last week's deadly assault a "terrorist attack" -- the first time the attack has been described that way by the administration after claims it had been a "spontaneous" act.
"Yes, they were killed in the course of a terrorist attack on our embassy," Matt Olsen, director of the National Counterterrorism Center, said during a Senate hearing Wednesday.
