The businessman Denis O'Brien has said he welcomes the fact that the Moriarty Tribunal is to commence a public investigation into the awarding of the state's second mobile phone licence.
Speaking after a very brief appearance in the witness box, Mr O'Brien said there had been a lot of innuendo and that it needed to be cleared up very quickly.
Mr O'Brien expressed outrage at being called away from a family holiday to attend today's session.
Asked if he was upset, the multimillionaire said "that's an understatement".
Mr Justice Moriarty has said that because of the diffusion and complexity of the matter, sessions to investigate the awarding of the state's second mobile licence would not begin until the autumn.
Earlier, Counsel for the Moriarty Tribunal said that it believes it may have been given false documents relating to property transactions in Britain involving Michael Lowry.
The property deals link the former minister to Mr O'Brien.
The matter came to light when the Tribunal was given further documents earlier this year by the Irish Times journalist Colm Keena.
The Tribunal has questioned whether there was a deliberate attempt to conceal Michael Lowry's true role.
This discovery centres on two letters sent by the British solicitor Christopher Vaughan who dealt with these property deals.
It has emerged that there are two different versions of each of these letters. Only one version was given to the Tribunal.
The letters handed over by Colm Keena refer to a "Michael" as the intended owner of this property. They also refer to a loan that "Michael" took out.
But the letters that the Tribunal has based its investigation on to date omit these references.
Counsel for the Tribunal said all this evidence would now have to be reviewed and revisited.
They have also said they will have to consider whether this was a deliberate attempt to conceal Michael Lowry's true role in this transaction.
Counsel for Denis O'Brien and others had argued against proceeding with this evidence today. They were overruled.
