A Dutch man found stabbed at his apartment in Dublin had been dead for several days.
His body was discovered in the bathroom of his home with a kitchen knife in his chest.
Gardai received a 999 call and immediately went to the Linnbhla complex, also known as the Santry Cross apartments, opposite Days hotel on the northside of the city.
The victim is in his late 30s or early 40s and had been living in the apartment for some time with another Dutch national.
Last night gardai were trying to confirm his identity and contact his family in the Netherlands. He was last seen alive on Friday in a Santry office where he worked and officers think he is likely to have been killed over the weekend.
The grim find was made shortly after 4pm yesterday by a letting agent, who managed the first-floor apartment. He broke down the door when attempts to contact the man by phone went unanswered.
The area was sealed off for examination by officers from the technical bureau at Garda headquarters in the Phoenix Park and the office of the State Pathologist was also notified.
Pathologist Dr Marie Cassidy arrived at the scene last night and the body was removed after an initial examination.
A post-mortem examination on the body will be carried out by Dr Cassidy in the city morgue at Marino this morning.
Pending the outcome of the post-mortem, the man's death is being described officially by the gardai as suspicious.
Efforts were also under way last night to determine the whereabouts of the dead man's housemate, while nearby residents were interviewed to find out if they had either seen or heard any suspicious activity over the past six days.
Also known locally as the 'Polish apartments', the sprawling complex comprises 216 apartments with a mix of up to 30 nationalities.
Garda Supt John Moran, from Ballymun station, is leading the investigation, with a team of 20 officers.
Gardai last night appealed for information from anyone who might have seen anything suspicious in the area since last Friday to contact them at Ballymun station on 01 6664400, or on the confidential line on 1800 666111.