The England and Wales Cricket Board (ECB) refused to name either the player or the match involved.
"An allegation of betting has been made against a player," ECB spokesman Andrew Walpole told BBC Sport on Monday.
"That matter is now in the hands of Gerard Elias, chairman of the disciplinary committee, and it is now up to him to make a decision."
All international cricketers, and all English County players, are required to sign an agreement not to bet on any match.
Rule-breakers could face a five-year ban from playing or administration and an unlimited fine.
Warne denies having association with bookie