In the last sitting day of the year for the ACT Assembly, a little-known committee has dropped a damning report recommending the territory's anti-corruption body investigate a case which could drag in the Chief Minister.

Key points: The deals centre around land near Lake Burley Griffin bought by the ACT Government for a price far greater than its valuation

The deals centre around land near Lake Burley Griffin bought by the ACT Government for a price far greater than its valuation The committee also raised questions around how much Chief Minister Andrew Barr, who was the responsible minister, knew at the time

The committee also raised questions around how much Chief Minister Andrew Barr, who was the responsible minister, knew at the time The ACT has established an Integrity Commission which begins accepting matters this weekend

In 2016, a series of land deals by the ACT Government were called into question when Auditor-General Maxine Cooper found payments were made higher than the government's own valuations for the land.

Leases for land adjacent to Glebe Park and the casino, Mr Spokes Bike Hire, Dobel Boat Hire and Lake Burley Griffin Boat Hire were found to have "significant questions over the probity of these transactions".

The lease for the land adjacent to Glebe Park was valued at $950,000 to $1.05 million in 2014, but eventually was surrendered to the ACT Government in September 2015 for $4.18 million, a month after Aquis Entertainment lodged an unsolicited bid to redevelop the adjoining casino and extend it into the newly bought land.

The central issue became whether the government's acquisition of the land was linked to an intention by the owners of the casino to develop the land.

Dr Cooper found several flaws in the process, including that some Land Development Agency (LDA) valuations were invalid, negotiations between the businesses varied significantly, and that the LDA on several occasions asked valuers to find ways to increase their valuation figures.

"The LDA was, in conducting these acquisitions, operating in what can be described, at best, as a 'grey area' of law," the Public Accounts committee reported.

The agency was dissolved soon after the Auditor-General's investigation.

Question mark over how much Chief Minister knew

One of the key issues at question was whether the now-Chief Minister Andrew Barr, who was the responsible minister at the time, knew of the details of the land deals.

Mr Barr, current and former ACT Government witnesses denied knowledge and any link between the acquisition of the land and the casino's development proposal.

But the committee, which is made up of two Liberal members and two Labor members, said that late in their inquiry, responses from casino developer Aquis Entertainment raised questions around the government's denial of any knowledge.

"The answers provided by Aquis show that the ACT Government was well aware of, and indeed encouraged, Aquis's plans for development on the land adjacent to Glebe Park," it reported.

"This raises the question of why the ACT Government would intervene by acquiring the land when a transaction could have taken place ... without involvement by government.

"The ACT Government's role as: current owner of the land … decision-maker on planning and lease conditions; and regulator of gaming in the territory, together with unresolved questions over the future of the land amounts to an apprehended conflict of interest on the part of the ACT Government."

The Committee wants the land deals investigated by the ACT's new Integrity Commission as it heard the previous inquiry had been limited in what it could consider.

Dr Cooper told the committee she was unable to draw a conclusion on the integrity of the deal, because the record-keeping surrounding them was lacking.

In a statement ACT Opposition Leader Alistair Coe said a thorough investigation by the Integrity Commission was required.

"It is clear there are still unanswered questions about these multi-million-dollar deals," he said.

A spokeswoman for the Chief Minister said it was an ACT Labor election commitment to establish the corruption watchdog.

"It will be a matter for the Integrity Commissioner to consider whether it deserves further investigation following the Auditor-General's report and a lengthy Assembly committee process," she said.

It is the first matter which has been recommended for investigation by the Integrity Commission.

The commissioner begins accepting submissions from the first of December.