A file has been sent to the Director of Public Prosecutions in relation to the Oireachtas 'Golfgate' dinner last August.
Gardai started an investigation after the event on the 19th August 2020, into what they said was "alleged breaches" of the Covid-19 temporary restrictions.
The file was finished in the last two weeks and sent to the DPP, who will decide if criminal charges are to be preferred.
The probe was carried out by gardai in Galway and several people were at the Clifden House Hotel that night, including public representatives, were interviewed.
A garda spokeswoman told the Irish Mirror: "A file in relation to this investigation has been forwarded to the Director of Public Prosecutions."
Former agriculture minister Dara Calleary and former European commissioner Phil Hogan both went to the dinner and afterwards resigned their posts.
Six Fianna Fail and Fine Gael senators lost the party whip but have been re-admitted since.
Supreme Court Judge Seamus Woulfe also went to the event, but a report by former Chief Justice Ms Susan Denham found that he "did not break any law or knowingly breach any guidelines" and that it would be "unjust and disproportionate" to seek his resignation.
