FIFA have investigated claims that a match between Nigeria and Greece at the 2010 World Cup could have been fixed.
The game finished 2-1 to Greece after Nigeria's Sani Kaita was dismissed for violent conduct following an incident with Vasilis Torosidis.
Former head of security for FIFA, Chris Eaton, has revealed that the match officials were under investigation following a comment made by a referee following the game held in Bloemfontein.
Eaton told Channel 4: "A referee approached a member of the FIFA investigation team and told him that he is the only person with any honesty and integrity in the room.
"How many officials? It may not be thousands but it would certainly be hundreds. We have a number of clubs and federations who are actively under investigation today to see the extent to which criminal infiltration has taken a hold of their decision-making processes."
Eaton also revealed that a Championship player has raised concerns over corruption and that FIFA have launched a separate investigation following his statement.