Detectives are investigating the cause of a building fire in the Whitsundays this morning.
Police were called to an industrial business at the corner of Sugar Mill and Main streets in Proserpine around 3am where a building on the premises was found well involved.
Initial investigations suggest unknown offenders have attended the address around midnight and entered a two-storey office block, where they have lit a fire inside.
The office building has sustained significant damage from the fire, which is not believed to have spread to nearby structures.
A crime scene was declared at 4:30am and anyone with information about the incident is urged to contact police.
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