Farah Addo, the president of the Somali Olympic Committee, has been banned from attending the 2004 Games in Athens.
Addo was accused of diverting Fifa funds earmarked for Somalia
The International Olympic Committee (IOC) has withdrawn Addo's accreditation for Athens following a complaint from world football's governing body, Fifa.
Addo was given a ten-year ban by Fifa after its disciplinary committee found him guilty of diverting funds given to his home nation under the world body's financial assistance programme.
Senegal's Keba Mbaye, who chairs the IOC's ethics commission, said the
decision to withdraw the invitation given to Addo was taken by the Executive Board, following a report from his body.
Addo had also accused Sepp Blatter of offering bribes to obtain votes during his campaign for the Fifa presidency in 1998, when he stood against Uefa boss Lennart Johansson.