The Anthony Freedman-trained stakes winner Minaj has returned a positive swab from a race at Moonee Valley in October.

Racing Victoria stewards have told Freedman of the findings from Racing Analytical Services that a pre-race urine sample from Minaj on October 25 contained the banned substance Dexamethasone, a short acting corticosteroid.

Minaj, a dual stakes winner, finished sixth in the race and stewards are continuing an investigation.

Freedman now trains with his brother Lee in a partnership which commenced in November.