Was Evidence Linking a Saudi Spy to the 9/11 Attacks Suppressed by the FBI?

Did the FBI conceal evidence indicating the involvement of a Saudi ‘spy’ in the 9/11 attacks? Omar al-Bayoumi has consistently denied being a Saudi agent or an extremist. However, new evidence uncovered in an investigation sheds light on his activities in the United States prior to the September 11, 2001 attacks, and his connections with al-Qaeda leaders and Saudi officials.