Suspicious fires take hold of three unoccupied homes across Melbourne

An investigation is underway into three separate suspicious fires at unoccupied homes across Melbourne.

Emergency services were called to Craigieburn, Glen Waverley and Noble Park as homes went up in flames before 5am today.

In Craigieburn, the home burnt to the ground with neighbours describing it as "intense" and "terrifying".

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Fire Rescue Victoria's Paul Buck said authorities have suspicions that something sinister must have sparked the blaze.

"The house was unoccupied, and there doesn't appear to be much furniture in there," he said.

"So for a fire to be burning as hard as it was at this point suggests there may have been some other interaction with the building"

Neighbours told 9News the home was known to be used by squatters.

Around the same time, a car was seen driving away from a home in Glen Waverley after it went ablaze.

"Neighbouring properties were under threat, so firefighters had to work extremely hard to protect those properties," Buck said.

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Earlier in the evening, another fire took hold of a home in Noble Park.

CCTV captured a man walking into the yard, entering the house through a window and running out the front door with a dog minutes later.

Then, the home appeared to be on fire.

All three homes, which were unoccupied at the time of the fires, were gutted.

At this stage, police do not believe the fires are linked but investigators are working through what's left of the homes to determine the cause.

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