RACING VICTORIA chiefs say trainers who try to cheat integrity investigators will be caught, and that no counter-surveillance measures will prevent it.

Fairfax Media's revalation of sophisticated techniques that cheats use to avoid detection has shone a light on a murky side of racing.

Racing's detectives disclosed that some trainers post lookouts with mobile phones at stable gates to warn of dawn raids before investigators can get inside. Other staff delay and stall investigators. Other trainers employed less visible but more sophisticated methods - such as falsifying medical and treatment records to hide their illicit actions.

Bernard Saundry, the chief executive of Racing Victoria, made it clear last week when he took the reins that his priority was cleaning up the sport - trainers who cheat and jockeys who bet, such as now-disgraced champion Damien Oliver, ousted for eight months following his admission of a gambling offence.

When questioned on Monday about the creativity of those trying to beat the system and the lengths they would go to, Saundry said such evidence only showed the scale of the challenge faced by the team from the Integrity Services Department.

''It's not rife, to our knowledge, but it does happen. I don't think it [such concerted efforts to fool the integrity services operation] is deeply embedded in our racing culture, but it does go on.

''People use all sorts of strategies to try to manipulate the system, and we are determined to stamp it out. The stewards and the integrity department will do whatever they need to do, but you have to remember we are also battling with human nature,'' Saundry said.

''Some people go to extraordinary lengths to achieve what they want.'' ''It's not just in racing. Look at other sports, look at the business world, where people break the law; look at how individuals operate at the margins with their tax or try to avoid it completely. Nothing is surprising in human nature, but we are determined to make sure those who break the rules get caught.''

■ Melbourne Cup-winning trainers Lee Freedman and Graeme Rogerson have dissolved their Sydney partnership. Freedman will return to Melbourne and Rogerson will stay at Randwick.

■ Racing Victoria on Monday fined trainer Ricky Maund $10,000 following the late withdrawal of Timely Truce during the spring carnival. It was found that Maund had treated the horse with an unnamed medication by way of injection.