A man is due to appear in Dublin District Court this morning charged with the murder of Michael Hughes who was stabbed to death with garden shears in the Manor Villas apartment complex, Harold's Cross, over the weekend.
The man has been detained at Terenure Garda station since he was discharged from St James's Hospital, Dublin, shortly after 4pm yesterday.
The 24-year-old was due to appear in court at 10.30am.
He had been arrested at the scene of the killing in Harold's Cross shortly after the fatal stabbing., but has been undergoing medical treatment since then, meaning gardaí were not in a position to question him.
Mr Hughes (30), Cuba Ave, Banagher, Co Offaly, was stabbed more than 70 times in the face and body by a man with a pair of garden shears.
The attack occurred as he slept in the corridor of the Manor Villas apartment complex, having been unable to gain access to a friend's flat in the block.
Mr Hughes, who had recently become engaged, had travelled to Dublin for a friend's engagement party.
Since the killing it has emerged the suspect had last week attended at two Dublin hospitals seeking assistance. The man from Dublin, was believed to have been suffering from mental illness.
It is understood he left the A&E units of St James's Hospital and St Vincent's hospital of his own accord while he was being assessed.
The HSE is now working with gardaí to establish the details of the man's contact with the hospitals and the circumstances of him leaving both.