Six teenage pedestrians were hospitalised after a crash in Monkstown near Dún Laoghaire on sunday.
Two of the teens suffered serious injuries to their limbs forcing medics to amputate, one of whom is in a critical condition.
The group of teenagers are aged between 13 and 15 and were injured when a car mounted a footpath and struck the pedestrians outside a shop on the Oliver Plunkett Road at Monkstown Farm.
The driver a woman in her 40's was also hospitalised alonmg with another 15-year-old boy who witnessed the scene.
Gardai are now trying to establish what caused the accident.
However, officers have still not spoken to the woman.
Anyone with any information is asked to contact Dún Laoghaire Garda Station on (01) 6665000, the Garda Confidential Line on 1800 666 111, or any Garda Station.
