Garda sergeant John White, who was sacked from the force in December 2006 after he was scathingly criticised by the Morris Tribunal into allegations of corruption, has died.
The Tipperary native was buried in St Patrick's Church, Killygordon, near Ballybofey, Co Donegal, yesterday after dying at home on Monday.
Mr White's career ended in ignominy after he was also attacked in the findings of the Nally report, which followed an investigation into claims he had made that senior garda officers had ignored crucial intelligence about planned terrorist attacks before the Omagh bomb atrocity in 1998.
The former detective had an unblemished record in the force until he was accused of wrongdoing during an inquiry, set up under Assistant Commissioner Kevin Carty, into corruption allegations in Donegal and, as a result, was suspended.
The outcome of the Carty investigation became the basis for the Morris Tribunal, with revelations that shocked the country.
The damning comments made by Mr Justice Frederick Morris were studied by then Garda Commissioner Noel Conroy before the government decided at a cabinet meeting to approve Mr Conroy's application to dismiss Mr White.
The application was made under legislation that had been introduced the previous year to allow the commissioner to take speedier action against rogue force members.
A report published by the tribunal found Mr White had planted a firearm at a halting site in Burnfoot, Co Donegal, and was responsible for an explosive being planted at a telecoms mast in Ardara.
At one stage of the tribunal, Mr White failed to appear before the judge and evidence was given that he was taking residential treatment on medical advice.
But Mr Justice Morris said a striking feature of the tribunal had been the number of witnesses citing psychiatric conditions as a reason for not giving testimony. The judge said Mr White had made a lengthy statement addressing many of the allegations against him, but had yet to deal with two matters.
These were that he broke wind in a female witness's face while interrogating her and that he manhandled or pushed her during interviews.
He said it would not be an enormous strain on anybody to deny such allegations, if he wanted to, and he could see no reason for postponing the tribunal.
In November 2006, the Nally investigation found that allegations made by Det Sgt White that senior officers ignored vital intelligence before the Omagh atrocity were completely without foundation.
It also found that the allegations were "a direct consequence of and motivated solely by concerns arising from the difficulties in which he found himself with his superiors in the Garda Síochána and with the criminal law".
The Nally report said it was clear Mr White had made no allegation, or mention whatsoever of his concerns to any person, including his wife, until after he had been arrested on March 21, 2000.
Mr White spent much of his plainclothes career in Dublin.
While based in Blanchardstown he met a small-time thief who was to change the course of his career.
The thief became his informant and the tip-offs became crucial to Garda intelligence when a man linked to the leadership of the Real IRA asked his gang to supply vehicles that were later used in cross-Border terrorist attacks.
But after the gardaí intercepted several bomb-laden cars as they were about to be driven across the Border for an attack, the terrorists became suspicious and began using a different supplier.
This was a major factor that resulted in the deadly blast in Omagh in August 1998.