Yep, this is a private organization saying a member of their organization broke the organization's rules. There is no criminal investigation here and not even a civil suit involving the courts (yet). The only reasons this is such big news are the ludicrous amounts of money involved and because a nation is now applying strong political pressure on another nation because of a soccer team.
The other side of the coin is going to be the counter-suits against MCFC by teams who got relegated or didn't make Champions League/Europa League/European Conferences League. Or even suits against MCFC from players on other teams who missed out on contract bonuses because they couldn't score against a cheating team (for instance).
This whole thing is a mess that could've been prevented by saying, "you know what, maybe we in England shouldn't allow a nation to own one of the teams in our league."