Seven-time world champion Lewis Hamilton lashed out at title rival Max Verstappen after Sunday's gripping Saudi Arabian Grand Prix, describing the Dutchman as "over the limit".
Mercedes driver Hamilton won a dramatic race under lights on the Jeddah street circuit but only after several close run-ins with Red Bull's Verstappen.
"I really had to try and keep my cool out there which was really difficult to do," said Hamilton.
"I have raced a lot of drivers in my 28 years of racing, I have come across a lot of characters. There's a few that are over the limit, the rules don't apply.
The tense battle culminated in a late collision when Hamilton, apparently unaware that Verstappen had been ordered to give up the lead after an illegal maneuver shortly before, hit the Red Bull as it braked in front of him.
Red Bull maintained that Verstappen was simply following instructions while Mercedes intimated that the Dutchman was 'brake-testing'.
???? incident between Max Verstappen and Lewis Hamilton ?— SuperSport ? (@SuperSportTV) December 6, 2021
Verstappen received a 10-second penalty for his actions. Correct decision? ?pic.twitter.com/GP0YaiXevX
"I don't understand why he hit the brakes quite so heavily so I ran into the back of him," said Hamilton.
"I didn't get the information. It was very confusing."
A visibly annoyed Verstappen, however, denied any wrongdoing in the incident.
Stewards, who gave Verstappen a five-second penalty for an earlier incident, were investigating the decision.
He later stormed off the podium, refusing to take part in the traditional end-of-race champagne spraying with Hamilton and his Mercedes teammate Valtteri Bottas who took third.
The two drivers are now level on points as they head to the final race of the season in Abu Dhabi next weekend, although Verstappen has the advantage of having won more races.
"It's a straight fight as it has been all year," said Red Bull principal Christian Horner.
"The form is with Mercedes but Max has fought like a lion this weekend, he has given it everything."
Hamilton has now won three races on the bounce and is primed to become the first man to win eight world titles, one more than the record he currently shares with Michael Schumacher.
"I am personally chilled," he said. "I feel like I am in the boxing ring and I am ready to go."