A man in his late 20s has been arrested in connection with the fatal assault of a man in his 60s in Malahide, Dublin, this morning.
The incident happened at around 8.30am at a house in the Gainsborough Lawn area.
Gardaí said when they arrived at the house the man was unresponsive, and was declared dead at the scene.
The scene has been preserved for examination by the garda technical bureau, and gardaí have said they will be investigating all of the circumstances around the incident.
The man who was arrested is currently detained at a garda station in the Dublin area.
The body of the man has been removed from the scene.
The office of the State Pathologist has been notified, and a post-mortem examination will be arranged.
It's understood the man in custody and the man who died were known to each other.
An incident room has been established at Malahide Garda Station, and a senior investigating officer has been appointed to lead the inquiry.
A family liaison officer has also been assigned to support the family of the deceased.
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Local Fianna Fáil councillor Cathal Haughey said there was deep shock over the fatal assault.
"When the news came through this morning, Malahide was deeply shocked."
He described the area as "a very close-knit community" and "a very quiet place to live".
"Things like this don't tend to happen. So, the community is shocked. We are very saddened and we would like to send our thoughts and our sympathies to the family," he added.
Cllr Haughey also said he wanted to encourage anyone with information about the incident to contact Malahide Garda Station.
Gardaí have appealed for any witnesses, particularly those who were in the area of Gainsborough Lawn between 8am and 8.45am this morning, to come forward.
They have also appealed for anyone with video or dashcam footage who in the area to make it available to them.
Those with information are asked to contact Malahide Garda Station on 01 666 4600, the Garda Confidential Line on 1800 666 111 or any garda station.
