The Northern Territory Police Force no longer holds concerns for the welfare of a 12-year-old boy.

The boy was located safe and well by police in South Australia in the Coober Pedy area this afternoon.

A 23-year-old male, believed to be known to the boy, has been arrested by South Australian Police and remains in police custody.

Police would like to thank members of the public for their assistance and information that has resulted in the safe recovery of the child.