Frankie Dettori is set to face a France Galop inquiry next week after a 'positive test' at Longchamp in September, the rider's legal representative has revealed.
Solicitor Christopher Stewart-Moore released a statement with the news the Medical Committee of the French authority are planning a hearing.
The statement, issued to Press Association Sport, said: "On behalf of Frankie Dettori I can confirm that, as a consequence of a positive test at Longchamp on September 16 2012, he will be the subject of an inquiry by the Medical Committee of France Galop next week.
"In compliance with, and out of respect for, the regulations of France Galop, he will not be commenting further until the France Galop procedures have been completed."
Dettori had four rides at Longchamp on September 16, a day of major trials for the Prix de l'Arc de Triomphe meeting the following month.