A third person has been arrested in connection with the shooting of dad-of-two John Gibson in Citywest.
A man, 29, was arrested today and is currently being detained at Tallaght garda station.
It follows the arrest of a 23-year-old woman last night in connection with the investigation.
A man, 22, who was arrested in connection with the investigation on Monday has been released without charge.
23-year-old woman arrested in connection with fatal Citywest shooting of John Gibson
Gibson, 28, was shot in the head as he sat in his car close to Citywest Shopping Centre in September 2017.
The 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.
Man, 22, arrested in connection with fatal shooting of father-of-two John Gibson
A garda spokeswoman said: " A 29 year old man was arrested today Thursday 27th March 2019 in relation to the fatal shooting in Citywest Shopping Centre on the 18th September 2017.
"He is currently detained at Tallaght Garda Station under the provisions of Section 30 – Offences Against the State Act 1939.
"This brings the total number of arrests to date for this incident to three."
