The headquarters of the French Tennis Federation and the home of its president have been searched as part of an investigation into corruption.

France's financial prosecutors say its investigation centre around "an illicit system of reselling tickets for the French Open tournament", and the "awarding of the contract for the renovation and enlargement of Roland Garros".

A travel agency in southern France was also searched as part of the investigation.

The FFT says it's fully co-operating with investigators.