Update 9pm: A State inquiry into the biggest property deal in Northern Ireland's history will investigate if dealings between Stormont and Dublin leaders were appropriate.
The Irish Government has given the go-ahead for a commission of investigation into Nama and its controversial Project Eagle sale.
The massive collection of Northern Ireland property loans, taken over by Nama after the economic crash, was sold to US investment fund Cerberus in April 2014.
The deal was "seriously deficient", the Dáil's Public Accounts Committee concluded earlier this year after a long-running probe into aspects of the sale.
Another big investment company said last year it pulled out of buying the portfolio because it was asked for a fixer payment of £16m for three parties behind the scenes.
Former Stormont finance minister Mairtin O Muilleoir has said Northern Ireland's entire political system was corrupted by the €1.2bn sale - while the North's business, legal and accounting sectors were left tainted.
Agreeing terms of reference for an inquiry, the Cabinet said it would investigate whether the sale was appropriate, if the price paid was appropriate and whether there were any conflicts of interest among Nama's Northern Ireland advisers.
It will also probe fees allegedly payable to a former adviser.
Furthermore, it will investigate if the decisions and actions of Finance Minister Michael Noonan, "including communications with members and officials of the Northern Ireland Executive" and meetings with potential bidders were appropriate.
The commission will also inquire into "anything arising outside the State that it considers relevant", the government has announced.
An interim report to the Taoiseach is expected within three months of the inquiry being set up.
A final report on the first module of its work must be finished by the end of June 2018.
Update 4.51pm: The Government has approved a draft Order and Terms of Reference for a Commission of Investigation into NAMA.
The Terms of Reference provide for an investigation into Project Eagle, but could be amended to provide for further modules at a later stage.
The draft Order will now require approval from both the Dáil and Seanad before the Commission is established.
The draft Order and Terms of Reference are as follows:
(a) if the disposal strategy for its Northern Ireland loan portfolio (including the timing of the disposal and sale as a single portfolio) was appropriate in the circumstances;
(b) if the minimum price applied (and how it was derived) in relation to its Northern Ireland loan portfolio were appropriate in the circumstances;
(c) if the management of the sales process by NAMA, (including procedures and controls applied, timeframes, access to potential bidders and record-keeping) was appropriate in the circumstances and demonstrated best corporate governance;
(d) if any conflicts of interest arising in relation to members of NAMA’s Northern Ireland Advisory Committee were managed appropriately in the circumstances;
(e) when and how NAMA became aware of fees allegedly payable to a former member of the Northern Ireland Advisory Committee by bidders on Project Eagle, and if this issue was managed appropriately by NAMA during the sale of the Northern Ireland loan portfolio, and
(f) if decisions and actions of the Minister for Finance and the Department of Finance relating to the disposal of the Northern Ireland portfolio, including communications with members and officials of the Northern Ireland Executive and meetings with potential bidders, were appropriate in the circumstances.
The Commission shall investigate anything arising outside the State that it considers relevant to any of the matters set out from (a) to (f) above in so far as the Commission considers it practicable, appropriate and reasonable to do so and considers procedures adopted for that purpose can be carried out without unduly delaying the completion of the investigation and with a substantial expectation of being able to obtain the evidence necessary for the investigation.
(a) set out the scope and findings of the investigations in fulfilment of the purposes set out in 2. above;
(b) respect obligations of confidentiality and commercial sensitivity where those are not incompatible with the public interest; and
(c) set out such recommendations as the Commission sees fit
Earlier: The Cabinet has approved a Commission of Investigation into the sale of NAMA's Northern Ireland loanbook.
There has been controversy over the sale to Cerberus, which the Comptroller and Auditor General described as seriously deficient.
That inquiry also found the Irish taxpayer lost out on a potential hundreds of million of euro from the sale.
Enda Kenny has told the Dáil that a full inquiry will now go ahead.
"Following receipt of further observations from the Fianna Fail party from Deputy Wallace, I took those into account and had approval given for the terms of reference for that.
"These are actions that are being taken by Government in respect of matters of public concern," he said.