Police are investigating a suspicious housefire in Sunbury late last night.
Officers responded to reports of a vacant house alight on Old Vineyard Road about 11.50pm.
A man was arrested near the scene before police determined that he was not linked to the fire.
There were no reported injuries.
The investigation remains ongoing.
Anyone who has CCTV, dashcam footage or any other information that could assist police with their enquiries is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.
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