"The body of the child was located 120 metres from the family, found dead on Jarra Jarra Road yesterday."
The bodies of a young family - a 19-year-old man, a 19-year-old woman and a three-year-old boy - were found yesterday about 4.5 kilometres from their broken-down vehicle.
The body of a child has been found following an extensive land and air search in a remote part of Central Australia.
The deaths were initially thought to have been caused by a auto crash - but that has since been ruled out.More news: Minister warns of action against Sarkar
At a press conference on Thursday morning, Investigators revealed that a major land and air search is now underway for another child who they believe may have also been in the vehicle.
The search was set to continue until police were able to completely rule out that there weren't other people in the vehicle.
Superintendent Jody Nobbs said police were concerned for the welfare of the 12-year-old boy.
Superintendent Nobbs has said earlier that the four occupants of the vehicle were seen leaving Willowra on November 2 and were bound for nearby Yarra Yarra.
"This is a tragic situation and our thoughts remain with the families affected by this incident".More news: Lionel Messi trained by himself a day after Inter 1-1 Barcelona
Remnants of food and water were found in the vehicle.
"(Police) identified that it wasn't a fatal motor vehicle accident as reported.
The alarm was raised by a "distraught" man at an Aboriginal health clinic at remote Willowra just before 12.30pm on Wednesday.
"Ensure that when you travel your vehicle is in a fit state, that you have sufficient supplies including water and a first aid kit, and that someone is aware of what your travel itinerary is, when you intend to leave, arrive and your anticipated routes", he said.
Police have asked for anyone who spots the boy or has information about his whereabouts to contact them immediately.More news: Is BioWare teasing Mass Effect 4?