A man and a woman have been arrested in connection with the murder of Dean Johnson in Clondalkin, Dublin, last May, bringing to five the number of people held in relation to the case.
The 27-year-old man and 25-year-old woman were arrested in west Dublin earlier today.
They are in custody in Blanchardstown and Clondalkin Garda stations under Section 30 of the Offences Against the State Act.
A 24-year-old woman was arrested last night in west Dublin and is still being detained at Ballyfermot Garda station under Section 30 of The Offences Against the State Act.
Two men (aged 33 and 26), who were arrested on Monday, are still in custody at Lucan and Ronanstown Garda Stations under Section 50 of The Criminal Justice Act.
Johnson (20) died after suffering multiple gunshot wounds to the upper body and head in the attack.
At least four shots were fired at Johnson, who had been sitting in the back seat of a red Volkswagen Golf being driven by a young woman on Moorfield Avenue.
The victim lived nearby with his parents and younger brother. His mother is believed to have been among a number of local people who rushed to the scene after hearing the shots being fired.
He was taken to Tallaght hospital where he was later pronounced dead.
Johnson was known to gardaí and had been convicted of possession of a large quantity of ecstasy tablets with an estimated street value of €30,000 in 2008. However, gardaí do not believe he was a major player on the drugs scene.
Gardaí are renewing our appeal to the public for assistance. Any witnesses to the shooting or anyone with information to offer are asked to contact Gardaí at Ronanstown on 01 6667700, the Garda Confidential Line on 1800 666 111 or any Garda station.