Former Manchester United midfielder Paul Pogba has been provisionally suspended after testing positive for a banned substance in Italy, the country's anti-doping agency has said.
The 30-year-old, who plays for Juventus, was tested after his team's victory at Udinese on 20 August.
The test detected abnormal levels of testosterone, a hormone that increases athletes' endurance.
The anti-doping agency said the French player - who did not play in that Serie A match but was on the bench - was suspended provisionally with immediate effect.
Pending a trial and testing of a backup "B" sample, he risks a suspension of up to four years.
Pogba has dealt with several injuries since rejoining Juventus from Manchester United a little more than a year ago.
He was ruled out of France's run to the World Cup final last year due to a knee injury.
There has also been an ongoing police investigation in France into allegations Pogba was targeted by extortionists - including his older brother, Mathias, who has denied any wrongdoing.
Juventus released a statement acknowledging the failed test and added: "The club reserves the right to consider the next procedural steps."
Pogba has made eight Serie A appearances for the club so far.