Mystery surrounds death of Qld parents

Mystery surrounds the discovery of two bodies in a Queensland home, with police still yet to say if they are treating the deaths as a murder-suicide or a double-murder.

Three young girls were left orphaned after their parents were found dead inside a home in the Logan suburb of Eagleby, south of Brisbane, on Monday.

A crime scene was established and fingerprints taken after the arrival of authorities, yet police held back from disclosing the nature of their investigation into circumstances surrounding the deaths.

A neighbour told AAP the couple were "polite" and "kept to themselves", with the youngest of their daughters "in nappies".

"They had little kids they would let play outside with other kids from this street," the neighbour said.

It is believed the children were removed from the home after Christmas.

A Queensland Police spokeswoman said the coroner would investigate.