A Garda watchdog investigation is under way after a two-car collision on the M50 where nine people were injured on Sunday.

Gardaí in Tallaght are appealing for witnesses following the collision, which occurred at approximately 5:30am on 9th August 2026.

Gardaí and emergency services were alerted to a vehicle travelling northbound on the southbound carriageway of the M50.

The vehicle was driving down the up ramp at Junction 12 when it collided head-on with a car.

An on-call team of investigators from Fiosrú, the Office of the Police Ombudsman attended the scene.

Fiosrú investigates incidents involving contact with gardaí where a member of the public has died or been seriously injured.

Gardaí said eight male teenagers were in one of the cars when the crash happened.

They have been brought to different hospitals for treatment, and one of them is in a critical condition.

The driver of the other car, a man in his 20s, is being treated for serious injuries.

Fiosrú said in a statement that its investigation does not necessarily mean a garda or gardaí have been accused of wrongdoing.

‘Instead, it means that Fiosrú should independently investigate the incident to ascertain whether or not the act or omission of a garda or gardaí may have resulted in the death of, or serious harm to, a person,’ it said.

Gardaí are appealing for witnesses and ask anyone who was travelling on the M50 between Junction 14 and Junction 11 northbound or southbound between 5am and 5.30am, and who may have dash-cam footage, to contact them.

Anyone with information is asked to contact Tallaght Garda Station on 01 666 6000, the Garda Confidential Line on 1800 666 111, or any garda station.