The only man charged in connection with the 11 September attacks in the United States has pleaded guilty to conspiracy charges.
Zacarias Moussaoui, a Moroccan born French citizen, said he was not part of the 9/11 plot itself, but a wider conspiracy to attack the White House.
He was arrested a month before the attacks on immigration charges, after a flying school in Minnesota reported that he had been acting suspiciously.
His guilty plea came the same day as the suspected leader of al Qaeda in Spain, accused of aiding the 11 September hijackers, went on trial with 23 others in Madrid.
His lawyers had attempted to prevent him pleading guilty, saying he was mentally unfit to do so.
But the judge in the case ruled that he was competent to enter a plea.
The US government says it will now seek the death penalty.
