Fiorentina striker Adrian Mutu has tested positive for a banned substance, according to the Italian Olympic Committee.
A statement said traces of sibutramine were found in a sample given after a Serie A match between Fiorentina and Bari on 10 January.
A statement on their official website read: “The Coni communicates that, following laboratory tests in Roma, a positive case has been found.
“In the first player who was tested, the presence of traces of the substance Sibutramine was found for Adrian Mutu during a routine control of the anti-doping committtee on January 10 in Florence, during the Serie A game between Fiorentina and Bari.”
The Romania international tested positive for cocaine in September 2004 when playing for Chelsea.
Mutu was subsequently banned for seven months by the Football Association.
The 31-year-old, who risks a ban of between one and four years, is already facing off-pitch problems also related to his previous offence.
The Court of Arbitration for Sport last year upheld the €17.17-million fine handed to Mutu by Fifa as a punishment for breaching his contract with Chelsea.
Mutu has been in excellent form for the Florence-based club, scoring five times this month – including a goal in the 2-1 win over Bari.