He was struck by a 4x4 vehicle

An investigation is underway after a garda was hit and injured by a vehicle while on checkpoint duty in Dublin.

The incident happened at Baggot Street Bridge on the southside of the city.

The garda was on checkpoint duty when a 4x4 vehicle failed to stop.

He sustained injuries to his leg and arm and has been taken to hospital.

The vehicle continued on towards Waterloo Road where it crashed into a wall and the occupants fled the scene.

Two men and a woman were later arrested and are being held at Irishtown Garda Station.