The blaze is being investigated as suspicious.

Two people are unaccounted for after a house fire tore through a remote property at the weekend.

Emergency services were called to Booyal Crossing Rd at Good Night Scrub, in Queensland’s Bundaberg region, about 9.15pm on Saturday, where crews arrived to find the home fully engulfed in flames.

Nine fire crews responded following multiple triple-0 calls, with firefighters battling the blaze for more than two hours before bringing it under control about 11.30pm.

The single-storey home was destroyed, with the roof collapsing as a result of the fire.

Queensland Police Chief Inspector Grant Marcus said there was “very little that people could do” by the time emergency crews arrived, describing the property as “completely engulfed in flames”.

Two residents — a 75-year-old man and a 79-year-old woman — remain unaccounted for.

“They do normally reside at that location, but at this stage we cannot locate them,” Marcus said.

The missing pair has led police to declare a crime scene.

“As a result, we are treating the fire as suspicious because we don’t know otherwise. This is normal practice under these circumstances,” he said.

Authorities have not yet confirmed whether the missing residents were inside the home at the time of the fire.

“At this stage, until we know otherwise, we don’t know if they were or were not,” Marcus said.

Investigators, including scientific and fire specialists, remain at the scene, with efforts underway to make the structure safe before a full examination can be carried out.

“We’re in the process of removing the roof to make the residence safe so investigators can get in,” he said.

Police say the pair are local residents and not previously known to authorities, with officers working with family members as inquiries continue.

Anyone with information or footage from the area around the time of the fire is urged to contact police.