Trainer Philip Fenton has been found guilty of possessing anabolic steroids that could have been intended for use on racehorses in Ireland.
At a hearing brought about by Ireland's Department of Agriculture, Fenton was fined €6,000, but the total will exceed €10,000 when costs of the case are included.
The court heard how several substances were obtained from Fenton's stables in January 2012, including a kilogram of Nitrotain which is illegal in racehorses in Ireland.
Fenton was also found to be in possession of Ilium Stanabolic, which includes the anabolic steroid stanozolol, with the drugs that were seized being able to be used to improve a horse's strength and stamina.