The only person charged with direct involvement in the terrorist attacks on the US has told his mother he can prove his innocence.
Zachariah Moussaoui's mother, Aicha el-Wafi says she has no information to back his claim.
She flew to Washington last night to plead for her 33-year-old son and to attend his January 2 arraignment in federal court.
"My son tells me he is not guilty. He has told me he has proof that he did nothing and that at the appropriate time he will show that proof," she said on US TV.
Moussaoui has been indicted on six conspiracy charges, four of which could bring the death penalty. He was in jail on other charges at the time of the attacks.
Mrs El-Wafi said she has not seen her son since 1997. She said she had never known him to be involved with Islamic radicals or to express hatred for the United States.
"When he was young he only watched American films. He never spoke of such things," she said.
Mrs el-Wa fi said she was concerned that her son doesn't speak any English and cannot understand the charges against him, and she questioned whether he could get a fair trial in the United States.