Leading Australian jockey Damien Oliver was charged on Tuesday with two offences related to placing a bet on another horse two years ago.
The 40-year-old, who admitted to the wager, was stood down from the sport immediately pending a hearing on November 20, Racing Victoria (RV) said on its website (www.racingvictoria.net.au).
"The admission and charges follow an investigation by stewards into allegations Mr Oliver bet on favorite and race winner Miss Octopussy at Moonee Valley on 1 October 2010, a race in which he finished sixth on second favorite Europa Point," the statement read.
Allegations that Oliver had placed the bet surfaced in local newspapers on the day of last week's Melbourne Cup, Australia's richest and most celebrated thoroughbred horse race.
The reports said the jockey placed a A$10,000 ($10,400) bet on Miss Octopussy but RV officials on Tuesday did not specify the size of the wager.
Oliver finished 11th on 2010 winner Americain in last week's Melbourne Cup.
(Reporting by Greg Stutchbury in Wellington; editing by Tony Jimenez)