A World Cup corruption scandal widened on Monday when Fifa opened disciplinary proceedings against two executive committee members and is investigating others.
Fifa ordered a formal ethics probe into allegations that two executive members offered to sell votes in the bidding for the 2018 and 2022 World Cups.
Football's governing body urged its ethics committee to "act without delay" and "take all possible steps" in the investigation of a Nigerian and Tahitian.
The hearings will be held on Wednesday, and Fifa said the two officials could face "provisional measures," or suspension.
The executives were filmed by undercover reporters from the Sunday Times newspaper of Britain asking for money for football-related projects.
Fifa said investigations were also under way into "other Fifa officials" who may have been involved.
Fifa will choose two World Cup hosts in a secret ballot scheduled for December 2 in Zurich. The 2018 race is between four European candidates: England, Russia and joint bids from Belgium-Netherlands and Spain-Portugal. The 2022 contest is between the United States, Australia, Japan, Qatar and South Korea.
swissinfo.ch and agencies