A time lapse captured by photographer Phillip Biggs shows the intensity of a blaze at a Mowbray timber yard on Tuesday night.
The fire broke out at Neville-Smith Forest Products on Remount Road about 10.40pm.
Footage captured gives an insight into the ferocity of the fire, as well as the manpower required to get the blaze under control.
On Wednesday Detective Inspector said the fire was being treated as suspicious.
“There is no [electricity] to the seat of the fire,” he said.
“We will be taking certain samples and tests for accelerant.”
Anyone with information regarding the fire should contact Crime Stoppers on 1800 333 000.