Washington (CNN)New allegations have emerged from the man described as the 20th 9/11 hijacker, alleging members of the Saudi royal family supported al Qaeda. Zacarias Moussaoui, who pleaded guilty in 2005 to six terror-related charges, makes the allegations in a sworn statement contained in a brief submitted Tuesday as part of an ongoing civil case by the families of 9/11 victims. In the late 1990s, Moussaoui says, he was tasked by Osama bin Laden to create a digital database cataloging al Qaeda's donors. Every day for two or three months, he says, he entered names of the group's donors into a Toshiba computer, along with how much they gave.
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Zacarias Moussaoui says members of the Saudi royal family supported al Qaeda
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The so-called 20th hijacker in the 9/11 terrorist attacks makes allegations in a brief that's part of a case by 9/11 victims' families
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Moussaoui, who's been in U.S. custody for more than 13 years, has had his credibility questioned before
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The Sept. 11 attack has been the most intensely investigated crime in history and the findings show no involvement by the Saudi government or @placeholder officials."
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Beyond his claims about the donor database, Moussaoui also says in this latest sworn statement that he was involved in a series of other plots against @placeholder targets.