A man remains in Garda custody today over the death of a teenager on Arranmore Island early yesterday morning.
The 19-year-old was seriously injured during an early morning knife attack in a pub on the island.
He was taken to Letterkenny General Hospital by the RNLI where he died at 10.30am.
Gardaí in Glenties, Co Donegal, later arrested 39-year-old man under Section 4 of the Criminal Justice Act.