The fédération Equestre international (FEI) announced the two of Steve Guerdat horses have tested positive for prohibited substances
Samples taken at CSIO La Baule in May this year from horses Nino des Buissonnets and Nasa; they returned positive for the banned substances codeine, morphine and oripavine.
The International equestrian fédération has suggested that the failed dope tests for the two horses ridden by The Olympic gold medalist might have been caused by poppy seeds contaminating their feed .
The Swiss rider has been suspended provisionally with the offer of a tribunal hearing pending further investigations . The telegraph