A renewed appeal has been made for information about the death of a man in a rural area of Co Kerry five years ago.
A murder investigation began after the body of 58-year-old James Cahillane was found at his home at Ardraw, Beaufort - about 5km from Killorglin - in the early hours of 19 April 2012.
Emergency services were alerted after neighbours noticed a fire at the house and Mr Cahillane's body was discovered by firemen who attended the scene.
A post-mortem examination indicated he had sustained injuries consistent with an assault.
Gardaí believe the fire was set deliberately to conceal the crime and destroy evidence.
A hammer head was recovered from the scene.
Mr Cahillane had spent a number of hours socialising in a pub in Killorglin on 18 April 2012 before getting a taxi home.
Reports at the time said the father-of-two, who was separated and lived alone, left the pub at around 10.50pm.
Superintendent Flor Murphy said he believes that someone in the Killorglin area has information.
Speaking on RTÉ's News at One, Supt Murphy said: "People's friendships or associations or loyalties might have changed and they now might be in a better position to give us vital information that may lead to some person being charged with the murder of James Cahillane."
Anyone with information is asked to contact Killarney Garda Station on 064- 6671160 or the Garda Confidential line on 1800-666-111.
Mr Cahillane's daughter Lisa said it has been terribly difficult for her and her brother to know that her father had died in this way.
"It’s been incredibly hard. Obviously we still don't have any answers for this crime. We do really want to get some answers and so we are appealing to anyone's conscience out there to come forward with any information they have."