Explosions rocked the sleepy calm of a central Queensland town as fire tore through a Rockhampton house where a body was later found.
Neighbour Carol Cockerell called triple zero after hearing a loud bang, and she then went to her front door, where she saw flames engulfing the Lakes Creek house about 2.30am on Thursday.
"It was really quite high, going off," she told reporters.
"When all the fire was going up, we had pieces coming over here and on the roof. So my husband got the hose out and started hosing it to make doubly sure that nothing caught on fire here, I mean the explosions were pretty big."
Four hours after the fire destroyed the home and a shed, human remains were found in the smouldering rubble.
Queensland police are treating the blaze as suspicious.
They have not released the gender or the age of the person who died, and say identification could take several days.
Senior Sergeant Luke Peachy says forensic officers will determine if the victim was killed by the fire, or something else.
"The house has been completely destroyed. It's not easy to say whereabouts in the house that body was found," he told reporters.
Police will speak to another person who lived at the house but wasn't home at the time of the fire.
He would not say if police had conducted any previous operations at the property.
"Any time a house fire has occurred we always treat it as suspicious until otherwise proven," Snr Sgt Peachy said.
"Until we can determine how that body has come to be there, we'll declare a crime scene and wait for advice from our forensic officers ... about how it may have started."
Detectives want to hear from anyone who might have information, or security or dashcam footage from the area around the time of the fire.
Paramedics assessed one person at the fire scene. They did not release the age or gender of that person, who wasn't injured.