Gardai in Letterkenny are investigating a knife attack in which 4 people were injured including a Garda Sergeant - in the early hours of this morning.
The incident occurred shortly after midnight on Lower Main St Letterkenny outside the Voodoo nightclub.
Three men - and a Garda Sergeant were injured - and were taken to Letterkenny General hospital.
All sustained non-life threatening injuries.
A 46 year old man - who was arrested at scene - remains in custody at Letterkenny Garda station.
Witnesses to the incident are asked to contact Gardai on 074 9167140.