Football's governing body are also probing allegations that unnamed bidding countries had entered into agreeme
nts which would breach the rules and code of ethics, Claudio Sulser, head of the ethics committee, told reporters.
FIFA, however, said they did not expect the December 2 decision on the two tournaments' hosts to be postponed.
"It's a sad day for football," said FIFA president Sepp Blatter at the end of the conference.
"In football, you have the good players and bad players and as president of FIFA it is my duty to protect the reputation of football and FIFA from manipulation or bad behaviour."
Sulser said said that Oceania Football Confederation president Reynald Temarii, a former professional player for French club Nantes, and Nigeria's Amos Adamu had been banned from any football-related activity for 30 days over claims they offered to sell their votes.
Sulser also announced that four more officials - all former executive committee members - had been suspended "in relation to an alleged breach of the FIFA statutes, the FIFA code of ethics and the FIFA disciplinary code linked to the bidding process for the 2018 and 2022 FIFA World Cups".
"We need to guarantee that the individuals affected can defend themselves," he said "We don't want a public trial of any sort, we want to respect their rights.
"But we have a zero tolerance policy... to protect the ethics of FIFA, its image and football in general. We need to respect all footballers, pros, amateurs and those who play merely for fun.
"The evidence that has been presented to us today has led us to take this provisional measure, as we considered that the conditions were definitely met to take this decision and we deem that it is crucial to protect the integrity of the 2018 and 2022 FIFA World Cup bidding process."
