The wreckage of a charter plane, with 13 people on board, that went missing en route to Papua New Guinea's Kokoda Track, has been found near the small town of Isurava.
The head of the Civil Aviation Authority Joseph Kintau says the crash site had been found.
He doesn't yet know if there are survivors, but says a radio signal had been received.
A helicopter crew scanning the crash site has reported no immediate signs of activity at the scene.
Mr Kintau says he didn't know how much of the wreck had been found or if there were signs of a fire at the crash site, but described the location as very, very difficult terrain.
He says it would be a three or four hour walk to the site.
Among the 13 people on board were nine Australians.