Irish rider Denis Lynch is to give evidence at an FEI hearing
Irish officials have confirmed that a second drugs test on a showjumping horse from the country's Olympic team has proved positive.
Denis Lynch missed the showjumping final in Hong Kong after his horse Latinus failed an initial test.
The rider admitted using a cream which contained a banned substance but insisted he had not attempted to cheat.
Lynch has told Horse Sport Ireland he will attend a hearing to explain why he used the lotion containing capsaicin.
The 32-year-old admitted using a Deep Heat-style lotion containing the ingredient on the horse's lower back.
A three-member panel of world equestrian's governing body, the FEI, has been appointed for a hearing which will take place in Switzerland on 5-7 September.
Lynch has been asked for details about the application of the banned substance.
The gold medal hopeful said he has used Equi-Block - which contains capsaicin - for years to loosen up horses' muscles.