Gardaí say this latest suspect is being held at a Garda station in west Dublin.
A third arrest has been made in connection with the death of a man at a restaurant in West Dublin on Christmas eve.
Tristan Sherry died during a botched shooting after he walked into Browne's Steakhouse on the main street in Blanchardstown on Christmas eve and shot a man.
He was then tackled and stabbed as he tried to escape.
He was pronounced dead at the scene.
Last Saturday, 22-year-old Michael Andrecut, with an address at Sheephill Avenue in Dublin 15, was charged with his murder.
Yesterday Gardaí detained a second person in connection with Mr. Sherry's death.
He is still being questioned.
Now a third arrest has been made.
Gardaí say this latest suspect is being held at a Garda station in west Dublin.
Family Of Man Murdered During Troubles Set To Appeal Court Ruling
Over 3,400 Drivers Caught Speeding During Bank Holiday Garda Operation
Gardaí Investigate Discovery Of Man's Body At Dublin Recycling Facility
Charges Dropped Against Asylum Seeker Accused Of Sexual Assault In Saggart Last year
Ireland Prepares For Winter As Clocks To Go Back This Weekend
Introduction Of Plug-In Solar Panel Technology Approved
Normal People Actors Among Signatures On Letter To UK Government Supporting Sally Rooney
