Jockey Danny Nikolic has been formally charged with making threatening comments towards Victorian chief steward Terry Bailey, who stood him down from riding last week.

Racing Victoria stewards issued two charges on Monday following an investigation into comments he made to Bailey before the running of the sixth race at Seymour.

The particulars of both charges are that Nikolic approached Bailey and made comments that were threatening to the chief steward and the safety of his family.

Nikolic has been charged under Australian Rule of Racing 175(a) which reads; Any person, who in their opinion, has been guilty of any dishonest, corrupt, fraudulent, improper of dishonourable action or practice in connection with racing may be penalised.

Nikolic was also charged under Rule 175A which deals with conduct prejudicial to the image of racing.

The charges will be heard by the Racing Appeals & Disciplinary (RAD) Board on Wednesday after it considers an appeal by Nikolic over an indefinite ban from riding issued at the Seymour meeting.

The RAD Board last week declined to grant Nikolic a stay of proceedings pending the appeal.

Nikolic is also involved in an investigation by Bailey and his stewards panel into allegations of race fixing.

The stewards are looking into several races races including one at Cranbourne early last year in which Nikolic rode the winner Smoking Aces.

They are also looking at a number of other races after receiving information from police about betting movements.