Fatal crash Mt Crawford, serious crash at North Adelaide

A passing motorist pulled two children and a woman from a burning car after it crashed into a tree in the Adelaide Hills, killing a man. Picture: 7NEWS

A man has died and three others were injured – including two young children – in a horror Hills crash on Tuesday morning.

The car was reported to have crashed at speed into a tree on Forreston Rd about 5.45am Tuesday.

A man, 21, has died and three others were injured in a horror hills crash. Picture: 7NEWS

The driver, an Andrews Farm man, 21, died at the scene while his passenger, an Andrews Farm woman, 21, was rushed to the hospital for treatment of non-life threatening injuries.

Two children, aged four and five, were taken to the Womens and Children's Hospital for treatment of minor injuries.

A passing motorist reportedly pulled the two children from the car after spotting smoke rising from it, and managed to also rescue a woman before it burst into flame.

A man, 21, has died and three others were injured in a horror hills crash. Picture: 7NEWS

Major Crash Investigators were at the scene on Tuesday morning, and Forreston Rd was expected to be closed between Martin Hill Rd and Warren Rd for some hours.

Police on the scene at King William Rd and Kermode Tce, North Adelaide. Picture: Mark Brake

It comes after a pedestrian was seriously injured after being struck by a car at North Adelaide.

The van crashed into a teenage girl at the intersection of King William Rd and Kermode St about 5.30am Tuesday, at North Adelaide.

The pedestrian, a 17-year-old girl from Christie Downs, was taken to the Royal Adelaide Hospital where she is being treated for serious but non-life threatening injuries.

Northbound traffic on King William Rd was temporarily blocked, but has since reopened.

Buses were detoured at Pennington Terrace, and traffic into the city was not affected.

King William Rd

Due to an incident on King William Rd near Kermode St, Nth Adelaide, traffic heading away from the city is currently being diverted at Pennington Tce.

Traffic heading into the city is unaffected.

For the latest traffic news, head to https://t.co/bL612YVRPs

— SA Infrastructure & Transport (@DFIT_SA) December 6, 2021