Fifa crisis: Uefa wants presidential election postponed
European football's leaders are to meet on Thursday in a bid to postpone Fifa's presidential election.
Uefa says Friday's vote should not go ahead after bribery and racketeering charges were laid against senior officials in football's governing body.
"These events show, once again, that corruption is deeply rooted in Fifa's culture," Uefa said.
Prince Ali bin al-Hussein of Jordan is standing against incumbent Sepp Blatter in the election.
Uefa added Friday's meeting of Fifa's members risked turning into "a farce" and said it could even boycott the gathering.
"The Uefa member associations are meeting tomorrow ahead of the Fifa Congress. At that point, the European associations will decide on what further steps need to be taken to protect the game of football," it added in a statement.
"In the meantime, the members of the Uefa Executive Committee are convinced that there is a strong need for a change to the leadership of this Fifa and strongly believe that the Fifa Congress should be postponed, with new Fifa presidential elections to be organised within the next six months."
Prince Ali has called for a change of Fifa's leadership and said in a statement: "We cannot continue with the crisis in Fifa."
Analysis - BBC sports editor Dan Roan
"The fact Uefa has come out and threatened to boycott the general assembly that begins on Friday unless the election is not postponed, tells you everything. The stakes are being raised. Blatter's opponents are seeking to capitalise on the biggest predicament of his career. He has been here before of course , vastly experienced, one of sport's great survivors. Do not be surprised if he can resist the call for him to step down, postpone the election or a sensational recount."
However, Uefa's stance is not shared by all football administrators. The Asian Football Confederation opposes a postponed election - and will vote for Blatter.
In addition to a United States-led criminal investigation, Swiss officials are looking into the 2018 and 2022 World Cup bids.
Fifa has welcomed the investigations into alleged corruption by some of its most powerful figures and said there is no question of re-running the 2018 and 2022 bids.
It has also insisted the election will go ahead as planned.
Fifa's Independent Ethics Committee has also banned 11 officials named by investigators from football activities. "Such misconduct has no place in football and we will ensure that those who engage in it are put out of the game," Blatter said.
'They'll have no option but to rethink and revote'
Sepp Blatter
Fifa say there will not be a revote for the 2018 World Cup in Russia or the 2022 tournament in Qatar
Lennart Johansson, former president of European football's governing body Uefa, says the decision to award the World Cup to Russia and Qatar should now be reviewed following the latest Fifa corruption allegations.
The 85-year-old Swede told newspaper Sportbladet: "I expect they will reconsider the decisions. Blatter himself has said that the decision to go east wasn't proper. I am sure the initiative will now be taken to make a new decision."
He also suggested England should be given the finals in 2018: "They haven't had it since 1966, and it's considered 'the motherland of football', whatever we might think. They are worthy of the attention," Johansson said.
Ex-England striker and BBC Match of the Day presenter Gary Lineker agreed that the bidding process should be reviewed: "There are now major investigations not just concerning Fifa and corruption but also the two bids - World Cups 2018 and 2022 - so a lot will depend on how rotten it was and how corrupt the voting process was.
"If it's substantial enough then I think they'll have no option but to rethink and revote. It's a mess, it's a huge mess."
Former Football Association (FA) chief executive Mark Palios believes Fifa's resolve in not re-running a bid could be "tested". He told the BBC: "In the past they've said if there is proven corruption of the process they would make changes and this is first time that will actually be tested."
But others doubt Fifa's appetite for a new vote.
Can Friday's election go ahead?
Prince Ali is the only challenger to Swiss Blatter after former Portugal international Luis Figo and Dutch Football Federation boss Michael van Praag withdrew so as not to split the anti-Blatter vote.
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Lineker calls for Fifa 'boycott'
Blatter, who has been in power since 1998, is expected to win a fifth term as president as he is understood to have the backing of the majority of Fifa's 209 member associations - despite the opposition from Uefa, which has 53 member associations.
And FA chairman Greg Dyke told BBC Radio 5 live: "This is a very serious day for Fifa and the leadership of Fifa and we would vote for Prince Ali, we were one of the people who nominated him to stand against Sepp Blatter and we would certainly vote for him if the election goes ahead but I'm not sure that it will go ahead in these circumstances."
David Mellor, chairman of the government's Football Task Force between 1997 and 1999, said: "To say this election can go on Friday takes absurdity to unrivalled lengths."
Former FA chairman David Bernstein told the BBC voters need more time to assess the ramifications of Wednesday's news and that the election should be postponed.
"There's too much uncertainty and a lot of evidence and stuff to come onto the table that you would've thought people would want to know about this sort of stuff," he said.
However, former Fifa advisor Michael Hershman told the BBC: "I reckon they will go ahead. I think Blatter has enough confidence to win, which is really unfortunate. Whilst not getting arrested himself he must take responsibility for creating a climate within Fifa which has led to various scandals and essentially to these arrests."
Fifa under Blatter 'lacks credibility'
Prince Ali, the man hoping to oust Blatter added a change of leadership was needed to restore confidence in Fifa.
He said Fifa needed leadership that:
"Governs guides and protects our national associations"
"Accepts responsibility for its actions and does not pass blame"
"Restores confidence in the hundreds of millions of football fans around the world"
BBC Newsnight chief correspondent Laura Kuenssberg said Blatter may be quizzed following Wednesday's developments.
A spokesman for the Swiss attorney general, Andre Marty, told Kuenssberg that "theoretically, every person involved in the allocation of the World Cups might be questioned".
Earlier this week, Uefa chief Michel Platini said Fifa will continue to "lack credibility" as long as Blatter remains in place.
Lineker also believes Blatter must go: "There can't be a more corrupt, deplorable organisation on Earth than Fifa. The house of cards is falling. Time for change!"
Britain's Minister for Sport Tracey Crouch said she "fully backed" calls for change, claiming "reform is urgently needed at the top of Fifa".
Labour too has called for Blatter to "step aside" and urged sponsors to withdraw support unless Fifa initiates "fundamental and immediate reform".
How the drama unfolded