The former British agent who worked undercover within the IRA has refused to withdraw his claim at the Smithwick Tribunal that a now retired Detective Sergeant passed information onto the IRA which led to several murders.
Peter Keeley, who also uses the name of Kevin Fulton, was asked by Jim O'Callaghan, Counsel for Mr Corrigan, to "withdraw your false statements and false claims".
However, Mr Keeley replied: "Absolutely not. I can't."
The witness has said he believed Mr Corrigan passed information onto the IRA which led them to murder RUC officers, Chief Supt Harry Breen and Supt Bob Buchanan, just minutes after leaving a meeting in Dundalk Garda Station in March 1989. His allegations led to the establishment of the Smithwick Tribunal.
He also claimed Mr Corrigan told the IRA that a Cooley-based farmer, Tom Oliver, was passing information to the gardaí and that he removed evidence to protect IRA members.
During his cross-examination this afternoon, Mr O'Callaghan accused Mr Keeley of making false accusations against his client to further his own agenda and disputes with his former employers.
"Effectively you've accused him of being a murderer," said Mr O'Callaghan, to which Mr Keeley replied "yes."
During his evidence today, Mr Keeley said Mr Corrigan had also removed fingerprints from a 1,000lb bomb being made in Omeath, Co Louth, when it was found by the gardaí and that he removed evidence from the vantage point used by the IRA in the Narrow Water attack where 18 British soldiers were killed by two large bombs.
Mr O'Callaghan has insisted that his client had no involvement in the first case and only interviewed one person in the second case.
Under cross examination by Michael Durack, Counsel for the Garda Commissioner, Mr Keeley claimed that he was told that the Real IRA had one million Viarga tablets to sell and as it was believed he was now working as a drug smuggler he was asked to try and find a buyer.
He got four tablets from Patrick 'Mooch' Blair and it was checked that the tablets were genuine. They sold legitimately for £10 each but he told Mr Blair he would get £5, which would have raised £5m for the paramilitary group.
Mr Durack said there was no record in the Garda Fraud Bureau about anything like this. Mr Keeley suggested there was a problem with the record keeping in the bureau.
He also alleged that when in the IRA he was involved in a deal with the mafia. To ensure that no one had any recording devices on them, they all had to strip naked and jump into a swimming pool before any talks took place.
Mr Keeley claimed that in his IRA unit there was at least one person, or maybe two other people, supplying information to the security forces. Mr Durack asked him did that concern him.
"No," he replied "why would it?”
"Because you were in the internal security unit. Isn't that what they're supposed to find out?" said Mr Durack.
Mr Keeley replied that his only involvement with the unit was to provide transport and other items like food when people were being questioned.
Keeley denies 'liar' claim
Earlier, Mr Keeley denied that he is a "pathological liar".
Mr O'Callaghan accused Mr Keeley of being an "attention seeking, egotistical, fantasist and liar." Mr Keeley rejected the assertion.
Mr O'Callaghan also put to Mr Keeley another claim he was in a car with IRA member Patrick 'Mooch' Blair when Mr Corrigan got in and told them Tom Oliver was passing information to gardaí.
But Mr Corrigan was on extended sick leave when the witness said this happened, so his evidence was that of a "pathological liar" according to Mr O'Callaghan.
The witness was adamant what he said was what happened and he denied lying to the tribunal.
It was also put to him that he was part of the IRA internal security unit who murdered Mr Oliver.
In his book 'Unsung Hero', Mr Keeley said he was in Ireland when Mr Oliver was kidnapped and murdered but said in direct evidence he was in Paris at the time.
Mr Keeley said there were inaccuracies in the book.
"You had a man tied up, in your own words, like a chicken in the back of a van and you drove him to his death," said Mr O'Callaghan.
Mr Keeley insisted he was not involved in what he said was the second "arrest" of Mr Oliver and his subsequent murder.
It was also put to Mr Keeley that his claim Mr Corrigan had helped remove incriminating evidence from a bomb found in Omeath could not be true because Mr Corrigan was not involved in the investigation.
The witness said he was told that "our friend" had removed fingerprints and that "our friend" was Owen Corrigan.
High Court rejects Scappaticci review
The High Court has rejected an application for a judicial review brought on behalf on Freddie Scappaticci, the man who denies he is the British agent known as 'Stakeknife'.
He brought the action following the decision of Judge Smithwick yesterday not to allow the legal teams observe Peter Keeley while being cross-examined by all lawyers at the Smithwick Tribunal.
Mr Keeley is giving evidence from behind a screen and only when cross-examining him can counsel see him.
Its been alleged at the tribunal that Mr Scappaticci was a member of the IRA and its internal security unit known as the 'nutting squad'.
Mr Scappaticci has denied the claims or that he was the highly-prized British agent known as 'Stakeknife'.
