A motorist has died after his car was hit by another car driving the wrong way on the N7 in Dublin in the early hours of this morning.

The collision happened on the outbound lane at Kingswood at about 12.20am.

Gardaí say a garda patrol car saw a Volkswagen Passat perform a u-turn a short time earlier and signalled it to stop.

However, the car with two men in it drove off and on to the wrong side of the N7.

The Passat then crashed into a Toyota Yaris car, which was driving on the correct side of the road.

The driver of the Yaris was killed in the collision.

The passenger in that car was seriously injured and has been taken to Tallaght University Hospital where his condition is described as critical.

The two men in the Passat which drove up the wrong side of the N7 were not seriously injured.

One of them was taken to hospital, the other was treated at the scene.

Gardaí say they are investigating the fatal collision, however the Garda Ombudsman Commission is to examine the earlier garda involvement in the incident.