Nine people have been injured in a two-car collision on the M50. Gardaí say eight teenage boys were in a car which was travelling northbound on the southbound carriageway of the M50. 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.