A pedestrian is in critical condition in the Mater Hospital this morning after being struck by a car.
The 19-year-old pedestrian was involved in the collision on the Drumcondra Road upper between the junctions of Griffith Ave and Homefarm Road, Dublin.
The incident occurred at around 4am this morning.
Gardaí are currently investigating the serious incident.
Diversions are in place while a forensic examination takes place.
Commuters are asked to find alternative routes as the road is closed in both directions.
The driver of the car was unharmed.
Witness to the collision are asked to contact the Gardaí in Santry on 01 6664000, the Garda Confidential line on 1800 666 111 or any Garda station.