Another person is facing charges in connection with the Christmas Eve attack at a Dublin steakhouse.
Tristan Sherry (26) died after sustaining "blunt force trauma to the head" in Browne's Steakhouse in Blanchardstown after shooting Jason Hennessy Snr, who died in hospital 11 days later.
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Mr Hennessy (48) had been having dinner with family and friends before the gun attack.
A number of people have already been charged in relation to the incident.
Gardaí said a male arrested in recent days is due before Blanchardstown District Court on Thursday morning.
