Police have arrested boys aged 13, 15 and 16 and a man aged 19 after a hit and run incident that left a man fighting for his life in the Royal Adelaide Hospital.
They were charged after the vehicle they were travelling in went through a red traffic light, colliding with a motorcyclist.
The vehicle failed to stop at the scene, where the 47-year-old male rider suffered life threatening injuries. The man remains in a critical condition.
The 19-year-old and the youths aged 16 and 13 were arrested when they ran from a stolen motor vehicle which was spiked by a police tyre deflation device on Grevilla Drive late on Thursday, police say.
A fourth person, a 15-year-old boy, was arrested by detectives from the Alice Springs Criminal Investigation Branch late yesterday.
Charges laid include hit and run cause serious harm; fail to rescue and provide help; drive unlicensed.
The four have been bailed to appear before court at a later date. Police continue to conduct inquiries to identify the fifth person who was in the vehicle at the time.
UPDATE Oct 17 @ 4.40pm
Police have charged a fifth person. A 19-year-old man was arrested by detectives at a home in Sadadeen earlier today.
He will appear before the local court on charges including hit and run cause serious harm and fail to rescue / provide help.
The other 19-year-old man, who was arrested and charged by police on Thursday night, was remanded in custody until Monday, October 19.