A registered vet and horse racing figure have been arrested as part of a major Victorian probe into race-fixing and cocaine trafficking.

Sports integrity detectives raided properties in Keilor East, Mornington and Wallan on Wednesday morning, arresting a 38-year-old man and 47-year-old woman.

Neither of the duo, from Keilor East and Mornington respectively, has been charged but both are being interviewed over a range of offences, including corrupting a betting outcome and conspiring to defraud the state’s horse racing stewards.

The probe has centred on the alleged use of illegal substances in racing and corrupt betting practices, along with the use, possession and trafficking of cocaine.

With one of the arrested pair a registered vet, police will consider making a formal referral to Victoria’s independent Veterinary Practitioners Board.

Superintendent Steve White of the intelligence and covert support command said the raids proved police were prepared to investigate all allegations of corruption in sport.

“Victorians are well known for their love of sport but equally they want to know that the playing field is fair and honest,” he said in a statement.

“We also know that the various sporting codes, such as the racing bodies we have been assisted by as part of this investigation, feel the same as police and the broader public.

“I can assure the public that Victoria Police take matters of corruption in sport seriously.”

-AAP