Bernard Conlon, who made the allegations that he was put up to making the silver bullet allegation by Det Sgt White, was criticised by the tribunal.
The tribunal stated that the accusation made by Mr Conlon was based entirely on his own testimony, which was deeply flawed.
"He was shown to be seriously inaccurate and to have lied in the course of his evidence to the tribunal. He has had an unfortunate history of criminal, dishonest and deceitful behaviour and is not a person whose testimony could be relied upon without corroboration in some material respect," the report said.
The tribunal further states that it had to be acknowledged that Mr Conlon could be lying, deceitful and cunning, and was a person who was well capable of inventing a story of his own for his own purposes, notwithstanding the personal limitations under which he operated.
Now resident in Sligo, Mr Conlon was born on April 24th, 1956. He was educated at a special school and is regarded as being of low intelligence.
Between 1981 and 1994, he incurred a number of convictions for offences of dishonesty including burglary, forgery, uttering forged documents, larceny, cattle maiming, indecency and malicious damage.
Illiterate and innumerate, Mr Conlon had the capacity and disposition to deceive honest people for the purpose of committing crime.
In at least one case he impersonated a garda. In another he posed convincingly as a Department of Social Welfare official.
He served numerous sentences of imprisonment, including one of four years for the robbery of an elderly person. In or about 2000 he moved to Sligo. He was convicted of larceny in the hostel in which he was working in 1992.
With regard to the fabricated story about the silver bullet threat, Mr Conlon gave evidence in relation to these threats in Letterkenny District Court and in doing so he committed perjury.
He was prosecuted and found guilty on an indictment in Sligo in June 2002 on three counts of making false statements to members of An Garda Síochána concerning the silver bullet threat.
He was sentenced to a suspended term of three years' imprisonment.
WHAT THE TRIBUNAL SAID: "He has told lies on oath to this tribunal, to the District Court and to the Circuit Court in respect of matters relevant to this inquiry."