Ralf Schumacher has labelled Toto Wolff a "sore loser" amid accusations from other F1 teams that Red Bull have breached the sport's budget cap.
Both Red Bull and Aston Martin have been subject to rumours that they may have broken the $145 million cost cap set for teams for the 2021 season, with the FIA set to reveal each team's finances in the coming weeks after audits.
Mercedes boss Wolff has called any breach of the Formula 1 cost cap regulations a "heavyweight" offence, while Ferrari Sporting Director Laurent Mekies has said there should be "far-reaching consequences" for any team that breaches it.
Christian Horner angrily hit back at the accusations, which he labelled as "not acceptable", and also voiced his concerns over confidentiality, stating: "The submission between the team and the FIA is one that is confidential.
"I have no idea what the outcome of rivals' submissions are, so I would be intrigued to know where their source of information for these fictitious claims have come from, and they're hugely inflammatory."
Schumacher reacts to budget cap row
Schumacher has given his take on the situation, and admitted that any suggestion of information being leaked must be taken very seriously.
"The basic structure has definitely been shaken," Schumacher told Sky Sports Germany, as quoted by Speedweek.
"The FIA has to investigate itself, because it must not and cannot happen that something slips out. What is happening here is only damaging Formula 1 and only the world governing body itself can be to blame.
"The FIA must be investigated here and possibly punished."
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Wolff a "sore loser", says Schumacher
In regards to Wolff, Schumacher believes that the Mercedes boss is still hurt by the team's loss of the 2021 drivers' title.
Lewis Hamilton was beaten to the crown by Max Verstappen in the controversial final laps of the season-closing Abu Dhabi Grand Prix.
"No matter what comes out: for me, Toto Wolff, with his harsh criticism, is rather the sore loser who has not yet digested the fact that he lost the 2021 World Championship," the former F1 driver said.
"I think that's a shame.
"What is clear, however, is that the cost cap must be adhered to. If that wasn't the case, then of course there must be a penalty."
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