A 12-year-old boy has been found after he wandered in the Western Australian bush for nine hours, travelling 550km.

At 11am on April 11 Noah ran away from a car he was travelling in and ran into bushland off the Great Northern Highway, about 90km south of Mount Magnet.

Police have no idea how the boy managed to travel so far.

Noah (pictured), 12, ran away from a car on April 11 and into bush land off the Great Northern Highway in Western Australia

Acting Sergeant Tino Meinen of Mount Magnet police told Geraldton Times: 'We’re not exactly sure how he ended up there, because he’s not very talkative.

'We were very concerned because he’s 12 years old, he didn’t have any water, no food, no protective clothing, and there’s all kinds of wild life like dogs out there.'

Police found Noah at 8pm, about 150km north of Meekatharra on the Great Northern Highway.

In a statement police said: 'A member of the public provided information regarding a sighting of the missing person. As a result, police attended a Truck Stop located approximately 150 km north of Meekatharra and located him safe and well.'

Noah had no injuries when he was found.

He was also given clean clothing and food.