Gardaí are investigating the death of a man in Kilbarrack, north Dublin.
In a statement, they said the man in his late thirties passed away in a house in Briarfield.
It stated that "all circumstances" are being investigated.
Units from the Dublin Fire Brigade ambulance service attended but the man died at the scene.
The statement added that a post-mortem will be carried in due course and this will determine the course of the investigation.