A commission of inquiry into organised crime in Queensland is following up an ABC investigation into investment fraud and police corruption on the Gold Coast.

The Queensland Organised Crime Commission of Inquiry (QOCCI) has written to Ken Gamble, a private investigator and cybercrime expert, who told 7.30 last month that the Queensland Police Service (QPS) fraud squad had failed to investigate serious organised fraud on the Gold Coast.

In the letter, obtained by the ABC, inquiry executive director Louise Shephard asked Mr Gamble to provide a submission, "outlining any issues you may have encountered with the Queensland Police Service ... together with examples".

"The Commission notes the recent ABC 7.30 program regarding boiler room scams on the Gold Coast," Ms Shephard wrote.

"Under the terms of reference, the Commissioner is to, among other things, make full and careful inquiry into the nature and extent of organised crime in Queensland, focusing on a number of key areas.

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"One of the key areas of focus is financial crimes.

"Further, the Commission is to consider the adequacy and appropriateness of the current responses of Queensland law enforcement."

Mr Gamble has acted for several groups of victims of large-scale Gold Coast-based frauds worth tens of millions of dollars.

The victims come from all over Australia.

Victims have told the ABC they have tried in vain for years to get QPS to act on so-called "boiler rooms", sophisticated high-pressure sales offices selling fraudulent investment products, often involving sports betting.

In 2011, Mr Gamble provided the QPS a 250-page brief of evidence on a $5 million sports betting fraud linked to cartoonist Larry Pickering, but says it has never been followed up. Mr Pickering has denied involvement.

Mr Gamble said he would be making a submission to the inquiry about his dealings with the fraud squad "and their inaction on specific sports betting fraud cases" over the last five or six years.

"This inquiry is a breath of fresh air," he said.

"Financial fraud is one of the most serious categories of crime as it leaves the families and their victims absolutely devastated."

The QPS declined to answer detailed questions from the ABC about a range of scams that have been the subject of complaints to police, saying matters were under investigation and resources were directed where the threat was highest.

Investment fraud investigation underway

In a separate investigation, Queensland's Crime and Corruption Commission (CCC) is probing six Gold Coast investment fraud syndicates and the possible involvement of corrupt former police officers in protecting these operations.

CCC acting chairman Ken Levy told the ABC last month just one of these syndicates was estimated to have defrauded people of at least $100 million.

A spokesperson for QOCCI said it was still accepting submissions and making information requests despite an official deadline of May 22.

The spokesperson said QOCCI had so far received 24 submissions and had also issued 52 "notices to compel relevant individuals to provide information".

The inquiry, chaired by former deputy director of public prosecutions Michael Byrne QC, was set up in February by the incoming Palaszczuk Labor State Government.

Due to report in October, it was part of a suite of measures to help form the administration's response to controversy over the former Newman government's controversial anti-bikie laws.

A separate review was launched specifically to look at the anti-bikie laws.

"The Commission is focused on examining the impacts of organised crime in Queensland and making recommendations to improve responses to organised crime in the future," the spokesperson said.

"The Commission's terms of reference also allow it to investigate allegations of criminal activity, and it will assess any such allegations on a case-by-case basis."