A group of seven children – who had left their nearby home before 8pm – were riding on the footpath on their way to buy ice cream at the time of the crash.
Emergency services were called to Oatlands, near Parramatta, at 8pm on Saturday, after reports that multiple people had been struck by a vehicle.
Four children died at the scene, police say.
Three of the children killed in Saturday night’s incident were siblings and the fourth was their cousin.
A fifth child, 10, was taken to The Children’s Hospital in Westmead in a critical condition.
Two girls, aged 10 and 13, were taken to hospital, both in a serious but stable condition, a NSW Ambulance spokeswoman said.
Three of the children killed in Saturday’s incident were siblings from the Abdallah family.
Danny Abdallah, the father of the victims aged 8, 12 and 13, told reporters on Sunday he and wife Leila were heartbroken.
NSW Ambulance Acting Superintendent Andrew McAlpine said paramedics had arrived to a horrific scene.
When the first crews arrived on scene they were met with carnage, a very, very difficult scene with a lot of chaos, he said.
The male driver, 29, was arrested at the scene after returning a positive result in a roadside breath test and taken for a breath analysis.
He allegedly recorded a blood alcohol reading of 0.150 – three times over the limit.
He has been charged with four counts of manslaughter as well as dangerous driving occasioning death, dangerous driving occasioning grievous bodily harm, negligent driving, drink-driving and other offences.
His case was on Sunday heard at Parramatta Bail Court. He did not appear in court and did not apply for bail, which was formally refused by magistrate John McIntosh.
He’s scheduled to return to Parramatta Local Court on April 2.
Source: National News Agency