Inspector Donal Ashe said gardaí have no definite leads in their probe into the killing of James Cahillane in Ardraw, a quiet, rural area 5km from Killorglin, on Apr 19.
“Somebody out there must know what happened on the night and we’re again appealing to them to come forward,” he said yesterday.
Insp Ashe said the “painstaking” investigation was ongoing and would continue until the killer was brought to justice.
More than 300 people have been interviewed, CCTV footage has been examined, and door-to-door inquires carried out.
The body of Mr Cahillane, a separated father-of-two, described locally as an inoffensive man, was found in the hallway of his dormer-style home, which had been gutted by fire. He lived alone.
Mr Cahillane, who worked as a maintenance electrician for the Fexco financial services company in Killorglin, got a taxi home from the town shortly before midnight, on Apr 18. He had been socialising in two Killorglin pubs.
The taxi brought him home and the next thing that was heard was a loud noise, like an explosion, from the house which a neighbour saw engulfed in flames at 2.10am, on Apr 19.
The house was surrounded by trees and was about 300m down a narrow road, off the Killorglin-Beaufort road.
It was initially thought Mr Cahillane, who enjoyed sport and a game of cards, had died accidentally in the fire. But an autopsy carried out by Dr Margot Bolster, the assistant state pathologist, showed he had head injuries and other wounds not consistent with a fire.
The crime has shocked a peaceful community and his son, Gary, later appeared on RTÉ’s CrimeCall to plead with the killer to come forward.
Insp Ashe said the gardaí received a number of calls after the programme, but the calls did not lead to a development in the case. * Anybody with information should contact gardaí in Cahersiveen on 066 9473600.