Source: Washington Post
http://www.washingtonpost.com/wp-dyn/content/article/2008/02/26/AR2008022603267.html
Even before the 2001 terrorist attacks, American-born imam Anwar al-Aulaqi drew the attention of federal authorities because of his possible connections to al-Qaeda. Their interest grew after 9/11, when it turned out that three of the hijackers had spent time at his mosques in California and Falls Church, but he was allowed to leave the country in 2002.
New information later surfaced about his contacts with extremists while in the United States. Now, U.S. officials are saying for the first time that they believe that Aulaqi worked with al-Qaeda networks in the Persian Gulf after leaving Northern Virginia. In mid-2006, Aulaqi was detained in Yemen at the request of the United States. To the dismay of U.S. authorities, Aulaqi was released in December.