Nine people have been injured in a two-car collision on the M50.
It happened after a car was driven the wrong way down the motorway at around 5.30 this morning.
Gardaí say eight teenage boys were in a car which was travelling northbound on the southbound carriageway of the M50.
The car collided with another vehicle while driving down the up ramp at Junction 12.
All eight of the passengers were taken to hospital for treatment, and one of them remains in critical condition.
The driver of the other vehicle, a man in his 20s, was also taken to hospital with serious injuries.
The section of the M50 from Junction 12 to Junction 11 southbound remains closed with local diversions in place.
Gardaí say investigations are ongoing and are appealing for witnesses to come forward.
