Anwar al-Awlaki
When queried by Fox News, the FBI denied having evidence connecting al-Awlaki and the September 11 attacks: "The FBI cautions against drawing conclusions from redacted FOIA documents. The FBI and investigating bodies have not found evidence connecting Anwar al-Awlaki and the attack on September 11, 2001. The document referenced does not link Anwar al-Awlaki with any purchase of airline tickets for the hijackers."