The Taoiseach, Bertie Ahern, has urged PSNI Chief Constable Sir Hugh Orde to share as much information with the public as he could on the so-called 'Stormontgate' affair.
Mr Ahern's comment came after this morning's talks in Dublin with the Chief Constable on the alleged spy ring that led to the fall of the power-sharing executive three years ago.
Afterwards, a Government statement said details of the briefing would have to remain confidential, but that the meeting reflected the seriousness of the implications of the issue.
The Garda Commissioner and senior ministers also attended the briefing at Government Buildings.
Sinn Féin MEP, Mary Lou McDonald, has described Mr Orde's visit to Dublin as 'a shoddy attempt to justify the use of British agents' and said it was 'an insult to the people of Dublin'.
She was speaking at a Sinn Féin demonstration outside the talks. A number of protestors were removed from the path of the Chief Constable's car as he arrived, but no arrests were made.
Sir Hugh earlier rejected Sinn Féin claims that the PSNI raid on Parliament Buildings at Stormont was politically motivated.