Fire breaks out at popular Donegal restaurant The cause of the fire is not yet known. Firefighters are currently at the scene of a fire at a popular Donegal restaurant. The fire started at the Firebox Grill in Fahan, Co. Donegal on Friday evening.The extent of the damage is not yet known. It’s not yet known how the fire started. 'Nasty' Derry assault video - P.S.N.I. urge people to 'RING 999'