Moreni tested positive for testosterone at the end of the 11th stage of the 2007 Tour de France, on 25 July 2007 (stage 16). He was arrested after stage 16 by French gendarmes. He pleaded guilty, and did not request that a second sample be tested. Subsequently, to his arrest, Cofidis withdrew from the Tour. Moreni was suspended for two years following the scandal.[1]
In 2009, when his suspension ended, Moreni became the first cyclist to pay a fine of one year's salary to the UCI. Moreni wanted to return as a professional cyclist.[2]