FA vice-chairman David Gill walked out of a meeting with Sepp Blatter after calling on the Fifa president to leave office next year, Sky News reports.
The Guardian also reports that Mr Gill hit out at Mr Blatter's suggestion yesterday that the British press had tried to undermine Fifa because of "racism".
Former Manchester United chief executive Mr Gill apparently called the remarks "totally unacceptable".
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According to local reports, the man was found by friends in their accommodation in Val Thorens resort in the Alps on Sunday morning.