The body of the 29-year-old was found on Deanstown Avenue in Finglas at around 4.30am on Sunday.
According to national broadcaster RTE, the man was known to the gardaí for involvement in organised crime and is suspected of being involved in a feud with a dangerous Finglas drug dealer.
The victim’s body remains at the scene, pending removal for a post mortem examination later today and the scene has been preserved for a forensic examination by the Garda Technical Bureau and Forensic Science Ireland.
Gardaí has appealed for witnesses or anyone with information to contact them at Finglas Garda Station on 01 666 7500, the Garda Confidential Line on 1800 666 111 or any garda station.
