The racing career of ex-Formula 1 driver Franck Montagny may be over after testing positive for a derivative of cocaine.

Montagny started the 2014-2015 season with Formula E team Andretti Autosport, but he's now been suspended from racing pending the test results and confirmation of any sanctions that he may receive.

As Autosport reports:

According to French newspaper L'Equipe, Montagny has not contested the result of a test carried out after the second Formula E round in Malaysia on November 22 2014.

"Auto sport is perhaps over for me," the Frenchman is quoted as saying.

"At the end of the race, I see the guy who tests signalling me. There, in my head, I understood immediately. I knew it was dead.

"I was ashamed."

Source: Autosport