Human bones have been found in a car dragged from a south-east Queensland dam and police are working to confirm whether they are those of a man missing for 13 years.
Homicide detectives were called in to help as police worked to determine whether the death was suspicious and if the remains were those of missing Tasmanian man Stuart Gatehouse.
A member of the public using a depth sounder noticed the car in Borumba Dam, about 50 kilometres west of Noosa and alerted police.
Divers combed the site on Thursday, finding a submerged car believed to be the red 1986 Holden Commodore Mr Gatehouse was last seen in.
When they dragged the vehicle from the dam, police discovered "skeletal remains" inside and called in the State Homicide Squad to help Sunshine Coast Criminal Investigation Branch detectives.
Mr Gatehouse disappeared about April 2004 and was last seen in Kenilworth, about 15 kilometres south-west of the dam.
According to the national missing persons register, he left Kenilworth for Gympie but never arrived.