Hundreds of Irish people congregated at the iconic opera house to welcome the Arigna man across the finish line at about 2 p.m. (3 a.m. Irish time).

Nathan Gallagher, from Burtonport, Co Donegal, was on a boat in close proximity to the beach when the drama unfolded.

Gardaí are to increase patrols at centres and events for the Irish Jewish community following the gun attack in Sydney.