France Accuses Their Own Players Of Cheating At Chess

Whoa.
The French Chess Federation has accused its own players of cheating during last year’s Chess Olympiad in Russia.
The players accused of cheating are grandmasters Sébastien Feller, ranked No. 5 in France, Arnaud Hauchard, No. 16, and Cyril Marzolo, an international master, who is ranked No. 46.
So far, there are no details about how the players may have cheated, but it’s a pretty big deal for a national federation to accuse its own players of cheating.
Yikes. We’re curious to find out how these players cheated and how the federation found out.
Thoughts?