The other imam at the same Falls Church mosque was Ali A. Timimi. He is an American born of Iraqi parents who is currently serving an unusually long prison sentence.
He was involved in the anthrax investigation but this is seldom reported in the press. He is better known for being the spiritual guide of the Paintball Cell.
Ali al Timimi/Tamimi wasn't a formal imam at Dar al Hijrah- he was a speaker there. Dar al Hijrah was Imam Anwar Aulaqi's mosque. Ali al Timimi, according to the local muslims, had tried to take over Dar al Hijrah but failed, and instead led a group of followers [the paintball cell] across town to form another mosque called
Dar al Arqam Center for Islamic Information. Dar al Arqam also served as the offices of two islamic "charities" which are listed as front organizations for terrorist groups. After Timimi's conviction the rest of the people associated with him abandoned the mosque.
Timimi was also an activist at George Mason University.