A second man has been arrested over the death of another man in his 40s in Dublin.
Ionel Nicolae Diaconu was stabbed to death at a house in Tallaght on Monday evening.
Gardaí were called to a house in the Castle Park area shortly before 9pm and found Mr Diaconu with suspected knife wounds.
He was treated at the scene by emergency personnel but was pronounced dead a short time later.
A post-mortem was carried out yesterday by State Pathologist Dr Linda Mulligan.
The results are not being released for operational reasons.
Gardaí at the scene of the killing in the Castle Park area of Tallaght, 12-12-23. Image: Aoife Kearns/NewstalkA 19-year-old man who was arrested at the scene remains detained under Section 4 of the Criminal Justice Act.
A second man was arrested yesterday as part of the investigation.
He is currently detained under Section 4 of the Criminal Justice Act at a Garda station in Dublin.
The investigation is being led by a Senior Investigating Officer and a Garda Family Liaison Officer has been appointed to liaise with the family of the deceased.
Gardaí are appealing anyone who may have information to come forward.
They can contact Tallaght Garda station on 01 666 6000 or at the Garda Confidential Line at 1800 666 111.
