Gardaí have released two men without charge over the shooting of Charles Sinanannpayen in Bray in the early hours of Friday morning.
A file is being prepared for the Director of Public Prosecutions.
Two men and a woman, all in their twenties, who were arrested in the Bray area this morning in connection with Mr Sinanannpayen's death remain in custody.
They are being detained under the provisions of section 50 of the Criminal Justice Act.
Mr Sinanannpayen (32) from Bordeaux, France, was pronounced dead at 2am yesterday morning at Beaumont Hospital. He had been on a life support machine since the attack took place
The victim was in bed in an apartment he shared with his partner at Richmond Hill, when the incident occurred.
It is believed he heard somebody outside his second-floor apartment and went to investigate. When he looked out his bedroom window a man standing on an external stairway discharged shots from a shotgun.
The victim was wounded in the upper body and face and fell back on to his bed. The injured man’s partner, who was in the bed at the time, did not wake up. However, neighbours heard the shots and alerted gardaí.
When officers arrived at the apartment they forced their way in and found the man injured and lying on the bed beside his partner, who was still sleeping.
Garda sources said Mr Sinanannpayen was not known to them prior to the attack. However, he is believed to be close to a relative of a significant drug dealer based in the Bray area.
Gardaí are investigating if the French national’s shooting could in any way be linked to the activities of the gang led by the Bray drug dealer.