The riders were reported to have been involved in a weighing-room altercation at the track after which Quinn was left with a black eye and bruised leg.
Munro, who become an expert in martial arts while spending several years out of racing, has been charged with a breach of the rule which states that no person shall act in any violent or improper manner on any premises licensed by the stewards of the Jockey Club.
If found guilty, Munro could face a fine of between £120 and £2,000, or be suspended. A date for the hearing has yet to be confirmed.
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