Kazakhstan's Dmitri Fofonov has tested positive for a banned stimulant, his Credit Agricole team said on the final day of the Tour de France.

Fofonov finished the race in 19th overall, 28:31 behind race winner Carlos Sastre.

Credit Agricole manager Roger Legeay said Fofonov told the team he bought a product over
the Internet to fight cramps.

He has been suspended and may be fired, Legeay said.

"He has failed to respect our basic team rules," he said. "No products can be taken by any riders unless they have prior authorization from the team doctor.

"He has made a mistake, which can happen, but it's not good news for us or for him."