The Garda Ombudsman Commission (Gsoc) received 176 complaints about gardaí in the Donegal Garda Division last year.
Figures released in Gsoc’s annual report for 2015 show that outside of the five Dublin Garda divisions, only Galway with 184, and Limerick with 175, had more complaints than Donegal.
Gsoc says all allegations of criminal offences by gardaí, such as assault, are investigated by the Garda Ombudsman’s own investigators.
There were 386 criminal investigations opened in 2015.
Gsoc received four referrals from the Garda for independent investigations last year. Only Dublin Metropolitan region (DMR) North Central division had more at five, while Cork County, Tipperary and DMR South also had four referrals.
The majority of the complaints were about abuse of authority, neglect of duty, criminal offences and discourtesy.
Gsoc said 2015 was a busy year with significant operational achievements made by the organisation and that there were continued improvements in efficiency and in dialogue
and cooperation with the Garda Síochána.