The FIA has announced that the International Tribunal hearing into the recent Mercedes secret tyre test will be heard in Paris on June 20.
Motor racing's governing body said on Monday morning that charges had been brought against both Mercedes and Pirelli for the three-day test that took place in Barcelona in the week after the Spanish Grand Prix.
A statement said: "On 5 June 2013, further to protests lodged during the 2013 Monaco GP by Red Bull Racing and Ferrari Scuderia Team against cars #9 and 10 (Mercedes AMG Petronas F1 Team) for having conducted with Pirelli a three-day tyre testing using a 2013 car on 15, 16 and 17 May in Barcelona, the President of the FIA, acting as the FIA Prosecuting Body, sent to the President of the International Tribunal a notification of charges against Pirelli and a notification of charges against Mercedes AMG Petronas F1 team.
"On 5 June 2013, Pirelli and Mercedes AMG Petronas F1 team have been convened by the President of the International Tribunal to appear before a judging panel of the International Tribunal."
The hearing will begin at 9:30 on June 20 and the FIA said that a decision on the matter would be made as soon as possible after the hearing.
Although Mercedes' charges will be that they broke the Sporting Regulations by running a 2013 car, it is not clear on what grounds the FIA is taking proceedings against Pirelli - because it is not a competitor.
However, the matter may relate to the Italian company following the exact terms of the contract it has with the FIA to supply tyres in Formula 1.