Investigations are underway after four separate assaults on a night of violence in Letterkenny town centre.
The attacks all took place along Main Street and Lower Main street after midnight, between 12.15am and 2.45am in the early hours of Sunday 25th July.
Three men were injured and all suspects are male, gardaí said.
Each victim required medical attention and their injuries were described as not serious.
Gardaí are asking witnesses to come forward and assist with investigations. Reports can be made to Letterkenny Garda Station on 0749167100 or the Garda Confidential Line Free-phone 1800 666111