Two gardaí were hospitalised after being savagely attacked in Claremorris, Co Mayo, in the early hours of this morning.
The officers, one woman and one man, were set upon at Kilcolman Road in the town after responding to an earlier incident in the area.
Both gardaí were treated in Mayo University Hospital in Castlebar but were released later.
The male garda involved was more seriously injured and is receiving ongoing medical treatment.
A spokesman for the Mayo Garda Division said that the attacks were particularly serious and prolonged.
He said that three men had set upon the male officer and that the attack had continued on the main road resulting in traffic being blocked.
Three suspects were later arrested and brought to Castlebar and Westport Garda Stations where they are being questioned.
Gardaí are appealing for witnesses to contact them at Claremorris Garda Station on (094) 937 2080 or the Garda Confidential Line on 1800 666 111.