Posted 11/7/2001, 11:30 a.m. EST

AP

French Moroccan
Moussaoui is a tantalizing suspect for U.S. authorities, but he isn't talking. Arrested in August on immigration violations, Moussaoui drew attention at a flight school because of his apparent lack of enthusiasm in learning how to take off or land. French authorities have long suspected him of involvement in terrorist activities. What does he know about Sept. 11?
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