The Department of Finance has published 41 documents relating to the sale of NAMA's property portfolio in Northern Ireland.
It comes ahead of NAMA's appearance before the Dáil's Public Accounts Committee tomorrow.
Members of the Northern Ireland Assembly Finance Committee will also attend the meeting in Leinster House.
The department's documents, released this evening, show that Northern Ireland Deputy First Minister Martin McGuinness was party to a conference call about a letter which he said he was unaware of last week.
Mr McGuinness gave evidence last week at a Stormont inquiry investigating the sale of the NAMA portfolio in Northern Ireland.
In his evidence, he said he was not aware of a January 2014 letter relating to the potential sale of the loans to US group Pimco.
However, documentation released tonight by the department shows Mr McGuinness was party to a conference call on the matter.
The document shows Minister for Finance Michael Noonan and two officials from the department were also on the call.
During the call NI First Minister Peter Robinson referred to a letter of intent from Pimco which made commitments to the Northern Ireland Executive regarding the management of property assets if it was the successful purchaser.
In a statement tonight Sinn Féin says the conference call with Mr Noonan is a matter of public record and was highlighted by Mr McGuinness at the Assembly committee meeting last week.
It says Mr McGuinness was not involved in the drafting, nor did he consent to the correspondence referred to in the call with Mr Noonan.
"He was kept in the dark of the nature and extent of meeting and correspondence on this matter", it added.
NI finance committee members to attend PAC session
The clerk of the Stormont committee has confirmed its members will be in the public gallery in the committee room when officials from NAMA address the committee.
It is expected that the NAMA officials will be asked about the continuing controversy surrounding the €1.6bn sale of NAMA's Northern Ireland loan book, known as Project Eagle.
Members of the Northern Ireland committee will then meet the PAC in private session for "an informal hearing" before the committee chair, Daithí McKay, later addresses the PAC in public session tomorrow afternoon.
Meanwhile loyalist blogger Jamie Bryson, who named Mr Robinson as a potential beneficiary of the Project Eagle deal before a Stormont committee, has claimed on social media that an invitation extended to him by the PAC chairman John McGuinness has been withdrawn.
However, a spokesman for the committee said that while they had been in touch with Mr Bryson, no formal invitation had been extended.
