The New Zealand-born rugby player Dion Berryman, who plays for the Italian club Cavalieri Prato, has tested positive for a banned substance.
The Italian Olympic Committee says Berryman has been provisionally suspended pending the analysis and publication of further tests.
Having merged with several other clubs in the region in 2010, Cavalieri Prato became Tuscany's top rugby franchise. The team has previously played in the European Challenge Cup.
Berryman has played the majority of his rugby in Australia.