A garda spokesperson said the force is investigating all of the circumstances surrounding the death of Marius Juodenas (44), following an incident in Dundalk on Tuesday, July 5.
Mr Juodenas, originally from Lithuania, was set upon close to his home in what gardaí believe was a targeted attack.
He was beaten with a hatchet, or hatchets, and at least one other implement – possibly an iron bar.
He suffered very serious injuries and there was massive blood loss at the scene.
“It was miracle that he lasted as long as he did after the sustained attack he suffered,” a source said.
It is believed Mr Juodenas was attacked by three or four men, all believed to be Eastern European nationals connected to the area.
Gardaí quickly identified suspects in the case. A number of searches have been carried out with items seized.
One of the suspects has had “major interaction with gardaí” over the last number of years, it is understood.
Officers are following a definite line of inquiry.
An incident room has been set up at Dundalk Garda station and a murder investigation has now commenced under the guidance of a senior investigating officer. A Family Liaison Officer has been appointed.
Gardaí are appealing or witnesses and are particularly appealing to those who were in the vicinity of Barrack Street between 6.30pm and 7pm on July 5, 2022, to come forward.
Any road users who were travelling in the area and who may have camera, including dash cam, footage are asked to make it available to investigating Gardaí.
Anyone with information is asked to contact Dundalk Garda Station on 042 938 8400, the Garda Confidential Line on 1800 666 111 or any garda station.