The 55-year-old man who died in a house fire has been named as David Costigan.
Mr Costigan, who was in a wheelchair, was a father of five adult children.
He had lived in Oldcourt Avenue in Bray for a number of years.
His body was brought to St Columcille’s Hospital in Loughlinstown this morning for a post-mortem examination.
A man in his 20s was in the house at the time of the blaze but was not injured.
Three units of Wicklow Fire Service attended the scene.
Gardaí believe the fire at the house was started maliciously.
They are investigating whether petrol or some other type of accelerant was thrown against the front door of the house or pushed through the door, resulting in a blaze that spread quickly.
Gardaí in Bray are appealing for witnesses or anyone who may have seen any suspicious behaviour in the vicinity of Oldcourt Avenue area before 4.30am to contact them on 01-6665300, the Garda Confidential Line on 1800-666-111