A truck driver remains under police guard in hospital after a fiery crash that killed four members of one family, leaving a nine-year-old boy the sole survivor.
The boy was found wandering near the burning wreckage of the car after it collided with the truck at an intersection in the rural community of Catani.
Police have confirmed a family of five were travelling in the car when it crashed, killing a mother, 33, father, 37, a six-year-old girl and a two-year-old boy.
Assistant Commissioner Robert Hill says the surviving boy suffered only superficial injures and is being comforted in hospital by social workers.
The force of the impact pushed the car nearly 50 metres down the road, sent its engine tumbling into the ditch and ignited a massive fire.
The truck then rolled on top of it.
There were no witnesses other than the boy and the truck driver.
The truck driver, 27, contracted by transport company Asixa, escaped with minor injuries and is under police guard in hospital.
Police on Friday night charged Jobandeep Gill, of Noble Park, with four counts of culpable driving causing death, four counts of dangerous driving causing death, one count of reckless conduct endangering life and one count of failing to stop at a stop sign.
He will remain under police guard until he faces a Melbourne Magistrates Court hearing expected on Tuesday but that date could be brought forward if he is released sooner.
