The scene at Castle Park in Tallaght remains sealed off.
A 19-year-old man is being held by Gardaí after a man was stabbed to death in Dublin.
It happened in Tallaght overnight.
The scene at Castle Park in Tallaght remains sealed off following this knife attack last night.
Shortly before 9 pm, Gardaí were called to an incident at a house.
A man in his 40s was treated by emergency services after being stabbed but he was pronounced dead at the scene a short time later.
The house was sealed off for a forensic and technical exam and a man was arrested.
He's being held at a Garda station in the Dublin Region and can be questioned for up to 24 hours.
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