Valcke was placed on indefinite leave last week following accusations he was part of a scheme to sell World Cup tickets for above their face value, for which he faces a formal investigation by FIFA's Ethics Committee.

E-mails and documents were released which suggested that Valcke knew tickets were being sold by Swiss firm JB Sports Marketing AG for up to five times their worth.

The Frenchman, who is President Sepp Blatter’s right-hand man and is tasked with the day-to-day running of world football’s governing body, has dismissed the allegations as "fabricated" and "outrageous".

His e-mails dating back to May of this year have been handed over, according to the office of Switzerland's attorney general (OAG).

Investigators will also be allowed to view older e-mails sent by Valcke, who has held his role at world football’s governing body since 2007.

"FIFA has in all instances forthwith responded to any and all requests received from the office of the Swiss attorney general and fully supports the investigation," read a statement from FIFA.

"FIFA has also voluntarily filed additional information and documents with the office of the Swiss attorney general in order to facilitate the investigation."

FIFA has been engulfed by claims of widespread corruption since May, when several officials were arrested on the eve of its Congress in Zurich.

Nine FIFA officials and five corporate executives have been indicted in the United States and charged with offences including money laundering, racketeering and wire fraud.

Blatter, who announced he would stand down as President just days after winning re-election in June, has urged FIFA to support the ongoing investigations into allegations of corruption in football.

"We should cooperate, no matter how close to home those investigations get," he wrote in his weekly FIFA magazine column.

"This is the difficult path we must follow if we are serious about change.

"We need to show that we understand the severity of this situation and that we are ready to take the right steps to fix it."



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