A 23-year-old man has been arrested on Saturday morning in relation to the murder of John Gibson.
Gibson, 28, was shot in the head while he was in his car at Citywest Shopping Centre in September 2017.
The man is expected to appear before the Criminal Courts of Justice, Parkgate Street on Saturday morning.
This brings the total number of arrests to date for this incident to five.
On April 13, A man in his late twenties was arrested but later released without charge.
A 29-year-old was arrested on Wednesday, March 27 and was detained at Tallaght garda station.
A 23-year-old woman was arrested and questioned the previous night while a 22-year-old man was arrested and questioned on Monday, March 25 and was released without charge.
Gibson, a dad-of-two from Lucan, had parked his car on Fortunestown Lane when the gunman struck before fleeing.
A white Volkswagen Caddy was later found burnt out near the scene.
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