Boy, 12, dies while his younger sister, 5, and mother fight for life after horror hit-and-run crash – as police arrest male driver who 'hit six cars before fleeing the scene'
- A man has been arrested over a multi-car crash that killed a 12-year-old boy
- The 34-year-old driver was taken into custody at 3.30am Sunday
- Nine people were taken to hospital as a result of the seven-car collision
- Emergency services rushed to Windsor Road at Baulkham Hills on Saturday 7pm
A man has been arrested after allegedly fleeing the scene of a horrific car crash that killed a 12-year-old boy and left his younger sister and mother fighting for life.
The 34-year-old was taken into custody at about 3.30am Sunday, hours after his Holden Commodore allegedly hit six stationary cars on a freeway in north-west Sydney.
Six people were injured in the collision, one fatally, with another four taken to hospital.
The 12-year-old boy's mother, 36, and sister, five, are in a critical condition.

A man has been arrested over the crash that killed a 12-year-old boy and left his sister, 5, and mother in a critical condition on Saturday night in Baulkham Hills, southwest Sydney
The driver of the Holden Captiva, a 38-year-old man believed to be the boy's father, was taken to hospital for assessment.
The man arrested allegedly fled the scene after careering off the M2 motorway at Baulkham Hills just after 7pm Saturday.
Fire and Rescue NSW Inspector Kernin Lambert described the scene as 'absolutely horrific'.
'We have had to cut five people out of their vehicles,' he told The Daily Telegraph.
'It was an extremely severe collision. People are fighting for their lives. We have been trying to keep people alive.'
The 34-year-old was arrested at a house on The Circle, Narraweena, on Sydney's northern beaches.
He was taken to Manly Police Station to assist with inquires and is yet to be charged.

Medical teams rushed to the scene at about 7.15pm with 10 emergency crews and two helicopters in attendance

The driver of a Holden Commodore collided with several cars before allegedly fleeing the scene
One witness said they saw a man speeding off the highway.
Medical teams rushed to the scene about 7.15pm with ten emergency crews and two helicopters in attendance.
The driver of a Toyota Corolla, a 65-year-old man, and his female passenger, 58, were also taken to hospital for treatment for minor injuries.
The occupants of the other four cars were uninjured, but taken to Westmead for mandatory testing before being discharged.

Fire and Rescue NSW Inspector Kernin Lambert described the scene as 'absolutely horrific'
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