Apprentice jockey Amy Graham has admitted to stewards snorting a white powder that she believes was cocaine, but feels video of the incident only leaked into the public domain “because of what feels like a vendetta against me”.

Graham fronted a stewards’ inquiry at Eagle Farm on Wednesday, with Queensland chief steward Josh Adams chairing the panel which is investigating a short video showing the jockey snorting a white powder substance from a saucer.

Graham and fellow Queensland jockey Casey Waddell were stood down earlier in the week by stewards who are investigating videos that were published online.