By Susan Candiotti, Ross Levitt and Mohamed Fadel Fahmy

American authorities are examining whether the leader of a post-revolution terror network in Egypt played a role in the September 11 attack on the U.S. Consulate in Benghazi, Libya, according to a U.S. official with direct knowledge of the investigation.

Muhamed Jamal Abu Ahmed has been detained by Egyptian authorities; however, the FBI has not yet had access to him, the official said.

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