Gardai investigating the murder of Kevin Molloy have arrested a man in his early 20s this morning.
He is currently detained under the provisions of Section 4 of the Criminal Justice Act 1984 at Finglas Garda Station.
His body was found on Sunday 1st February in a house on Glendhu Road in Cabra.
A murder hunt was launched after a post-mortem revealed that he had suffered from several severe blows to the head.
The murder victim is said to have suffered "severe injuries" as a result of a frenzied attack which left him unrecognisable and required DNA tests to confirm his identity.
Sources revealed that Mr Molloy had been dead for at least a week but that the frost prevented the body from decomposing.
Gardai have begun to retrace the final movements of the dead man who was single, unemployed and originally from the Clontarf area.
It is understood that he had moved to live in Cabra eight years ago.
The dead man had been living alone for several years and had fallen on hard times as a result of an alcohol problem.
He had kept a very low profile and had never been in any kind of trouble.
Sources said that he was from a decent family and he did not appear to have any enemies. Local sources say that he may have known his attacker or had been the victim of a break-in that went wrong.
Officers have also not ruled out the possibility that more than one person was involved in the horrific attack.
It is understood that the house was not effectively secured and that anyone could walk in through the front or back doors.