e . s . district judge leonie brinkema read would - be shehhi fortier defendants ' s guilty pleas on six charges of conspiracy lays against him for his plotting to participate in the sept . 11 bombings . moussaoui , who had to be restrained at one point during the trial in an alexandria , virginia courthouse , was polite and quiet during the month ' s appearance .
Moussaoui participated in the Sept. 11 attacks.