Sepp Blatter has resigned as Fifa president amid growing pressure following widespread allegations of corruption at football's world governing body.
Blatter - who won a fifth term on Friday - had been under intense pressure to step down since senior Fifa officials were arrested on a string of corruption charges last week.
Blatter confirmed: "An extraordinary congress is to be called to elect my successor as soon as possible."
Ex-Fifa vice president Jack Warner has vowed to release an "avalanche" of secrets in an extraordinary television address in Trinidad.
A full transcript of the confession of shamed Fifa official Charles 'Chuck' Blazer has tonight been released by the US justice department.
A Fifa whisleblower has described Sepp Blatter as a 'diabolical genius' - but said Russia and Qatar should keep their World Cups.