A memorial plaque has been put up in the west Dublin suburb where innocent Dean Johnson was shot dead in a case of mistaken identity almost four years ago.
The 21-year-old was gunned down in Harelawn Green in Clondalkin by a lone shooter on August 24, 2013.
The Herald previously revealed that a criminal who was discovered with a fatal gunshot wound to his head last December is the chief suspect in the murder of the young man.
A memorial stone has now been laid at the scene of the murder in memory of Dean, while a tree has also been planted in the locality.
Local Sinn Fein councillor Mark Ward has also made a fresh appeal for anyone who may have information in relation to the murder to come forward.
"Dean Johnson was not in the wrong place at the wrong time. Dean was in his own neighbourhood. The gunman who callously murdered Dean was in the wrong place," he said.
"He had no right to direct the violence not only on Dean but also on Dean's family and Clondalkin in general. This criminality has no place in our communities.
"I am calling for anyone who knows anything related to this case to come forward so the family can have some justice. Remember, Dean could have been your son, brother, a friend out on a night out, only to have his life pulled out from under him.
"I am pleased that the council responded favourably to a motion that I tabled last year. A tree has been planted and a memorial stone has been laid in Harelawn Green."
The tragic victim was not involved in crime and it quickly emerged that the intended target of his murder was now-jailed Clondalkin hood James 'Nellie' Walsh (30), who escaped unharmed in the shocking incident.
It previously emerged that gardai were investigating whether a criminal who died in mysterious circumstances last year was involved in the killing.
Suspected hitman Glen Clarke was found lying unconscious with a gunshot wound to his right eye in the Riverdale Estate in Leixlip, Co Kildare, on December 2 last year.
Despite Clarke's death, the investigation into Mr Johnson's murder is still ongoing, as gardai have arrested more than a dozen other people who they believe have knowledge of the sickening crime.