According to this:

Saudi Arabia, which has often denied having an al-Qaida presence on its soil, announced yesterday that at least 90 citizens will be prosecuted for links to Osama bin Laden's terrorist network.

Prince Nayef, the interior minister, told Okaz newspaper that a further 250 suspects were still being questioned, though 150 others had been released...

One of those released was 21-year-old Saud Abdulaziz al-Rasheed, whose arrest had been demanded by the US on the grounds of suspected links to the September 11 hijackers.

Public announcements about al-Qaida arrests have often sought to counter US accusations that the kingdom was dragging its feet in the "war on terrorism"...