Almost 30 firefighters have battled a blaze that has destroyed the historic Albion flour mill in Brisbane’s inner-north.
They say it started on the third floor of the four-storey building just after 2:00am (AEST).
The building had been earmarked for redevelopment and two men were seen running from it.
Queensland Fire and Rescue Service spokesman Mark Dearlove says the blaze is being treated as suspicious.
“It’s a very good chance it’s been lit because it’s a derelict building,” he said.
“There’s no power actually going into the old mill building so it’s very unlikely it started all by itself.”
He says the fire quickly spread.
“As far as fires go it was fairly simple fire – it was a known empty building, it was an external defence of attack only,” he said.
“We had approximately five urban fire appliances and two aerial appliances with approximately 28 firefighters.”
Police Inspector Steve Flori says two men were seen running from the fire.
“The first one is 16 to 18 years,” he said.
“He was wearing a dark baseball cap dark shirt and dark trousers and the second person of interest to us is in his 30s, wearing a white shirt with extensive tattooing on his neck and arms.”