A man has been arrested as part of the investigation into the murder of Tristan Sherry on Christmas Eve.
Gunmen entered Browne’s Steakhouse in Blanchardstown on December 24 and fired a number of shots, injuring Jason Hennessy Snr who later died in hospital.
Tristan Sherry, one of the suspected gunmen, was fatally assaulted at the scene.
Two murder investigations have been launched in response to the incident.
Gardai arrested a man on Wednesday morning in relation to the murder of Mr Sherry.
It is the 10th arrest as part of the investigation.