Gardaí are dealing with a collision on the Bagenalstown to Borris road in Carlow.
The two car rear-end collision happened at approximately 4:35 pm.
Three males were taken to hospital.
One person has been airlifted to Dublin, while the two others were taken to St Luke's Hospital in Kilkenny.
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Gardaí say injuries are not thought to be life-threatening.
The road has been closed for the last hour and a half and will remain so until at least 7 pm.
Gardaí ask motorists to exercise caution on approach to the scene.
