From the Waterford News & Star (Reported on by some national publications also)
"THE Waterford ‘mid-ranking- Garda who ‘abandoned’ an unmarked squad car in Dublin Airport has been temporarily demoted to uniform duty. The garda, who was going on holidays with a number of other members of Waterford gardai – including an Inspector – left the car, which is attached to a specialist unit, on airport grounds without notifying any authorities.
Gardaí are allowed to leave official cars within assigned areas at Dublin Airport when flying out on official business and at these times, there is an agreement that the keys are handed in to Dublin Airport garda station so the cars can be moved or reassigned when necessary. In this case, nobody knew who owned the car and airport police were eventually forced to have it towed. An internal investigation took place and the garda has essentially been given a “slap on the wrist”."
I believe (s)he was reverted from Detective duties to Uniform duties while a disciplinary process was being gone through. Their home was also searched under warrant it is reported elsewhere.
I don't recall seeing any further reporting about it after the initial flurry.