The body of the man, who was in his 20s, was discovered after frightened neighbours called gardaí to report a disturbance at the Manor Villas complex near Mount Argus Church at Harold’s Cross in Dublin.
Local people raised the alarm after hearing a struggle at about 6.30am on Saturday but they did not realise the extent of the incident until gardaí entered the apartment and discovered the bloody scene. A doctor was called but the man was pronounced dead at the scene.
A postmortem was carried out and the results released last night.
Gardaí said the results showed the man “died as a result of multiple stab wounds” and the investigation was upgraded to a murder probe. The deceased was not formally identified but gardaí stressed that media reports naming him yesterday were incorrect.
The scene was sealed off as Garda forensics experts moved in to search for the murder weapon.
A 24-year-old man arrested close to the scene was initially taken to Sundrive Garda Station in Crumlin for questioning under section four of the Criminal Justice Act but he was later taken ill and had to be brought to St James’s Hospital for treatment.
A Garda statement issued last night stressed the detained man had not suffered any physical injuries. His condition in hospital was described as stable.