CROWN casino has made no formal complaint to police after falling victim to a $32 million rip-off.

A high roller has been implicated in the sophisticated scam, in which Crown's surveillance equipment was infiltrated by an unauthorised user.

The Herald Sun has been told staff noticed nothing irregular about the high roller, a visitor from overseas.

He was described as polite and personable towards those at Crown.

The infiltration of the Crown surveillance system cameras allowed messages to be relayed to the high roller about how he should bet.

The high roller was hit with a withdrawal of licence, banning him from the casino, after the rort was uncovered.

A VIP services manager has been dismissed.

Victoria Police said it had been briefed by the casino on the matter but had received no formal complaint.

Crown declined to comment on when it had briefed police but maintained it expected to recoup most of the money.

Las Vegas-based casino consultant Barron Stringfellow said he was not surprised at what happened.

Mr Stringfellow told the ABC he believed the scam would have been simple.

Originally published as 'Polite' high roller ripped off Crown