The mother and child killed in a horror smash at the weekend were from a well-known Kaiwaka family.
The two killed were in a northbound car which collided with a southbound vehicle on State Highway 1 about 200m north of Oruawharo Rd in Topuni about 9pm on Saturday.
Two other people injured in the crash were in stable condition, at Starship and Auckland Hospitals.
It was alleged a silver sedan failed to stop after the crash and was located by police just north of Auckland with another person who was in the car at the time of the crash.