The probe follows the death of schoolgirl Tiahleigh Palmer.
Charges of murder, incest and perjury have been laid against the 12-year-old's foster family.
Fairfax: Queensland Police
The 12-year-old's body was found in November.
Foster father charged with murder, foster brother arrested over serious charges.
The 12-year-old’s body was found on a northern Gold Coast riverbank in November.
The mother of murdered Queensland schoolgirl Tiahleigh Palmer has called for public help in catching her daughter's 'vile' killer. The body of Tiahleigh Palmer, 12, was found on a northern Gold Coast...
Queensland Police have offered a $250,000 reward for information leading to an arrest or conviction in the suspected murder of Queensland schoolgirl Tiahleigh Palmer. The 12-year-old disappeared from...