Speaking on The Last Word on Today FM, John Wilson said he and his fellow whistleblower, a garda still serving, had been targeted for speaking out.
He said in one instance a rat had been tied to his door. He was then asked if he was aware of gardaí keeping tabs on politicians or prominent figures.
He said: “I can confirm that Clare Daly is recorded on the criminal intelligence system as having attended a meeting which was attended by the late Brian Lenihan.
“She attended a meeting at which he was a speaker and she is recorded on the An Garda Síochána criminal intelligence system for having attended that meeting.”
When he was asked why, he replied: “Your guess is as good as mine.”
Ms Daly was unavailable for comment last night and gardaí were considering a query on the matter.
Meanwhile, a fresh probe into how penalty points have been quashed was demanded by Independent TDs, including Ms Daly, who criticised two Garda reports into the matter.
The quartet of TDs which also includes Mick Wallace, Joan Collins, and Luke “Ming” Flanagan, said the internal investigations had been selective with facts and misleading in parts. The group plans to table Dáil legislation to toughen up rules.
The TDs insisted Garda whistleblowers dispute the official reports’ claim that fatal road traffic accidents did not involve drivers who had points quashed.
They also expressed concern that the whistleblowers had not been interviewed by Garda Assistant Commissioner’s John O’Mahony’s investigation team.
Mr Wallace said the Garda inquiry, and another by the Garda Professional Standards Unit, were not acceptable. He confirmed he had been arrested a number of years ago while working for Dublin City Council, but that it had been “unlawful”.
He said there was no need for him to stand down from the campaign after it emerged he had points quashed but had not made this public.
Mr Flanagan said he was “not proud” of the incident, but he had “forgotten” about the quashing.