After 30 years of service, Garda whistleblower Maurice McCabe is to retire from An Garda Síochána at midnight tonight.
Sgt McCabe has been on leave since May 2016 after he made headlines across the country after he uncovered problems within the penalty point system.
His honesty came at a high price however, as a smear campaign against him was set up by former Garda commissioner Martin Callinan and Supt David Taylor.
In recent weeks, Mr. McCabe was vindicated by the Disclosures Tribunal and was branded as "a genuine person who had the interests of the people of Ireland in his mind at all times."
Justice Minister Charlie Flanagan, current Garda Commissioner and Sinn Féin leader Mary Lou McDonald have paid tribute to Sgt. McCabe.
He handed in his retirement notice to Assistant Garda Commissioner Fintan Fanning at the weekend.