Fire destroys prestige car workshop in Melbourne's north-west

In short:

Firefighters have battled for more than two hours to control a blaze inside a car workshop in Airport West early this morning.

There were reports of explosions inside Prestige Autoworks on King Street just after 1am.

What's next?

The cause of the fire will be investigated but police are treating it as suspicious.

Police are investigating a fire that has destroyed a prestige car workshop in Melbourne's north-west.

There were several calls to Triple Zero (000) reporting explosions inside Prestige Autoworks in Airport West just after 1am.

Firefighters arrived within seven minutes to find the brick workshop fully alight, with flames spreading through the roof.

"Due to structural collapse, firefighters wearing breathing apparatus were forced to conduct a defensive attack," a Fire Rescue Victoria spokesperson said.

More than 50 firefighters battled the blaze and three aerial appliances were brought in.

It took more than two hours to bring the fire under control.

A community warning was issued for smoke in the surrounding area.

Paramedics were called to the scene but there have not been any reports of injuries.

A Victoria Police spokesperson said no one was believed to have been inside the auto workshop when the fire began.

They said the cause was still being investigated but it was being treated as suspicious.

"Due to structural damage, investigations at the scene will continue when it is safe to do so," the police spokesperson said.

They urged anyone who witnessed the incident, had vision or any other information to contact Crime Stoppers on 1800 333 000 or www.crimestoppersvic.com.au.