The acting president of Asian football has called on its 46 federations to cooperate in the ongoing corruption investigation of suspended president Mohamed bin Hammam.

Zhang Jilong said in a statement Monday that the Asian Football Confederation's disciplinary committee has asked the secretariat to hire former FBI director Louis Freeh's agency to assist in the investigation.

Bin Hammam is accused of enriching himself and handing out tens of thousands of dollars to supporters during his nine-year reign.

Freeh led a FIFA probe against bin Hammam into allegations that he attempted to bribe voters during his presidential campaign against FIFA president Sepp Blatter. It initially resulted in a lifetime ban last year but was overturned last month by the Court of Arbitration for Sport because of a lack of conclusive evidence.