Zacarias Moussaoui ( Arabic : زكريا موسوي , '' '' ; born May 30 , 1968 ) is a French citizen who pleaded guilty in U.S. federal court to conspiring to kill citizens of the United States as part of the September 11 attacks . As a result of his conviction , he is serving six life sentences without parole at the Federal ADX Supermax prison in Florence , Colorado
September 11 attacks
September 11 attacks
Zacarias Moussaoui