Newitt confirmed the news to RSN on Tuesday, indicating that a request had been made for him to front Racing Victoria stewards in the coming weeks.
“There’s not much I can say. I’m not too worried about it,” Newitt told RSN.
In a statement on Tuesday, Racing Victoria confirmed the ongoing investigation.
“Racing Victoria Stewards and the Tasmanian Office of Racing Integrity have been conducting a joint betting investigation over recent months. That investigation is ongoing and thus we won’t be commenting on the subject of our inquiries at this time.”
A winner of 35 Group 1 races in Australia and abroad on star gallopers including Lankan Rupee, Miss Andretti and Samaready, Newitt left Melbourne to resettle in Tasmania in 2017.
On Sunday, the 33-year-old steered Barry Campbell’s Eastender to victory in the Group 3 Hobart Cup (2400m).