Kane McCormack, whose body was found in a field in Co Meath on Saturday, was shot three times in the head, according to gardaí.
Gardaí released the results of the post mortem last night..RTÉ
reports that Mr McCormack, 24, was last seen alive at 5pm on Friday evening after he told his partner that he was going to meet someone.
However when he failed to return, she became concerned for his safety and reported him missing to the gardaí. His car was later found parked at a supermarket in Clonee.
It is believed Mr McCormack was then taken to a field in Walterstown in Co Meath where he was shot in the head. His body was found on Saturday morning.
Gardaí believe that Mr McCormack is the 12th victim of the ongoing Hutch-Kinahan feud. It is also believed that he was the son of another victim killed by one of the two gangs in December last year.
Gardaí believe that the killers may have been in the area a number of times prior to the killing as they planned the murder.
Gardaí said Mr McCormack parked his 04-D silver Peugeot 307 in the Aldi supermarket car park in Clonee village at 5pm on Friday. He then got into a black saloon type car, which turned right towards Dunboyne.
Shortly after 6pm, gardaí in Finglas responded to a call that a black Audi saloon car was on fire just off the M50 at Meakstown Cottages.
Gardaí are trying to establish any link between the murder and this black Audi car.
Superintendent James Cannon has appealed to anyone who was in Clonee village, particularly in the Aldi car park, at or around 5pm on Friday evening and who may have noticed either of the vehicles.
Supt Cannon also appealed to anyone who drove the road through Walterstown after 5pm and who may have noticed a black saloon parked on the road.
He also appealed to anyone who was in the vicinity of Meakstown Cottages or Balseskin Reception Centre at around 6pm and who may have noticed any suspicious activity around the burnt-out Audi car.
Gardaí are appealing to anyone who may have dashcams or who were in or close to any of the locations to contact Ashbourne Garda Station on 01-8010600, the Garda Confidential Line on 1800 666 111 or any garda station.
The murder scene remained sealed off yesterday as the forensic examination continues and house to house inquiries in the area are to be conducted.