Gardai said no arrests have been made.
Three men have been taken to hospital following a violent altercation at a halting site in Dublin.
It happened shortly before 1pm today but Gardai remain at the scene, at Oldcastle in Clondalkin.
The injured men have been brought to Tallaght and St James Hospital for treatment.
Their injuries are described as non-life-threatening.
No arrests have been made.