Moussaoui later confessed to being the "20th hijacker" and was sentenced to life in prison without parole in 2006 after a trial marked by numerous outbursts, conflicts with his lawyers and questions about his status, if any, within Osama bin Laden's al-Qaida network.
He told jurors he was to have piloted a fifth plane on Sept. 11 and fly it into the White House.
But after the jury decided against sentencing him to death, Moussaoui recanted his testimony and denied any role in 9/11, saying he lied on the stand because he assumed he had no chance of getting a fair trial.
Rewards for Justice, which was created in 1984, has paid about $77 million in rewards to more than 50 people.
Associated Press writers Doug Glass in Minneapolis, Minn., and Laura Wides-Munoz in Coral Gables, Fla., contributed to this report.
On the Net:
Rewards for Justice: http://www.rewardsforjustice.net