Adrian Mutu tested positive for a banned substance

Romania international striker Adrian Mutu has tested positive for a banned substance, according to the Italian Olympic Committee.

A statement said traces of anti-obesity drug sibutramine were found in a sample after a Serie A match between his Fiorentina side and Bari on 10 January.

The 31-year-old tested positive for cocaine in 2004 while at Chelsea.

Mutu was banned for seven months by the Football Association, but he could face a four-year ban for a second offence.

Sibutramine is an appetite suppressant drug used for obese people, although it was recently banned in the UK amid fears over the increased risks of heart attacks and strokes.

Mutu has been in excellent form for the Florence-based club, scoring seven times this season - including a goal in the 2-1 win over Bari.

But away from the pitch a Swiss Federal Court is nearing a ruling on his appeal against the Court of Arbitration for Sport, which said he must pay Chelsea 17m Euros (£14.62m) for breach of contract.