Paul Kavanagh (26) was gunned down as he sat in his Volkswagen car in Drumcondra last Tuesday.
The 26-year-old was shot a number of times and pronounced dead at the scene.
Gardai have issued an appeal to the public for assistance and information in respect of a white Audi car which was recovered burnt-out near the scene of the incident.
The car, a white A1 with registration number 142-D-4628, was the subject of an "unauthorised taking" in the Dublin area on the 11th of March.
Gardaí are appealing to anyone who may have observed, or with information regarding the whereabouts and movements of, this car between the 11th and the morning of 26th.
Anybody who may have seen the car is asked to contact the incident room at Ballymun Garda Station.
Investigating Gardaí are particularly interested in sightings of the car in and around the Drumcondra area on the morning of the incident.
Anyone with information is asked to contact Ballymun Garda Station on 01-6664400 or the Garda Confidential Line 1800 666 111.
It was reported Kavanagh was killed by his own gang for pocketing money he was collecting from a notorious Drimnagh drug dealer, who was gradually repaying a debt of over €1m to the Kinahan mob.
His murder is the second gangland killing in the family in a year. His uncle Gerard ‘Hatchet’ Kavanagh was shot dead by two masked assassins in Spain last year.
Kavanagh from Drimnagh was an enforcer in Christy Kinahan’s drug organisation. However, it is believed he had a falling out with Irish criminals based in the Costa Del Sol.
Paul Kavanagh was also a friend of Paul Rice who helped carry the coffin at Kavanagh’s funeral.