Ferrari driver Sebastian Vettel has written a letter of apology to FIA race director Charlie Whiting and president Jean Todt following his expletive-laden Mexican Grand Prix outburst.
The German told Whiting to "f**k off" twice over team radio after he refused to step in and demand Max Verstappen move over for Vettel, after the pair tussled over third place in the closing laps, with the Red Bull driver cutting the corner to maintain position.
Related: Full radio transcript of Vettel's Mexico outburst
It's understood Vettel immediately sought out Whiting after the race to discuss the matter and to apologise for his outburst, although at the time Whiting was unaware of the comments.
Vettel could be penalised by the governing body for bringing the sport into disrepute under the FIA Sporting Code, with sanctions ranging from fines, reprimands or even a race ban – although the latter is unlikely.
The four-time champion has now written a private letter to both Whiting and president Todt to apologise for the language used and for any offence it may have caused.