The FIA is looking into Sebastian Vettel's radio meltdown from the Mexican Grand Prix to work out whether the German breached any rules.
Vettel, upset Max Verstappen had not been immediately told to move over having cut across Turn 2 to hold third place, told FIA race director Charlie Whiting to ""f--- off" as he crossed the line in Mexico. Whiting soon issued a time penalty for Verstappen, promoting Vettel to third position -- though Vettel subsequently lost that place due to a time penalty of his own.
After celebrating on the podium Vettel went to apologise personally to Whiting. However, according to Motorsport.com, the FIA is investigating to see whether Vettel breached any rules and whether any action needs to be taken.
Of particular relevance are the following articles of the FIA's International Sporting Code:
12.1.1.c Any fraudulent conduct or any act prejudicial to the interests of any Competition or to the interests of motor sport generally.
12.1.1.f Any words, deeds or writings that have caused moral injury or loss to the FIA, its bodies, its members or its executive officers.
Red Bull boss Christian Horner said after the race he would be surprised if Vettel was not reprimanded for what he said. Penalties for breaching the rules above include a reprimand, a fine or even suspension from an event.