A 20-year-old man is in a critical condition in hospital after being assaulted in the Sylvan Park area of Letterkenny.
It's understood the 20-year-old was at a house party in the early hours of this morning, and there was an argument at the party before the assault happened.
The 20-year-old victim from Rathmullan was found badly beaten. He was taken to Letterkenny General Hospital, where he remains today. He's said to be in a critical condition.
Gardai have arrested one man in relation to the assault. Five others are helping Gardai with their enquiries.
The gardai are appealing for witnesses to contact Letterkenny Garda Station on 074 916 7100