Former TD Mr Liam Lawlor has said he will challenge the findings of the Mahon tribunal in the courts "if it doesn't reflect the truth as I interpret it".
He said last night that he had "no doubt" the report would find him "absolutely innocent" of any wrongdoing.
He said the tribunal should have sought to establish the facts through private inquiries rather than through the lengthy tribunal process which had cost millions of pounds.
In an interview on Sky News, he also said he believed new measures would be introduced in the autumn to ensure the tribunal did not continue until 2011, as some have suggested it could. He claimed there was now a consensus emerging in the Dáil that the cost factor had to be addressed.
He said that in Britain, Lord Hutton could report quickly on why the British government went to war. In the US there has already been a report published on September 11th.
"And we're now down in Dublin Castle for five or six years, but another five or six discovering did Liam Lawlor get 3,500 legitimately or not. For God's sake it's . . . farcical, absolute farcical." He said there was no question that he was ever corrupt. "Never. Never, asked for or received a corrupt penny in my life."