Police probe suspicious factory fire in Melbourne

An investigation is underway into a factory fire in Thomastown, north of Melbourne, last night.

Emergency services were called to the blaze at the Lipton Drive building just before 7pm.

More than 20 firefighters took about half an hour to control the fire, which completely gutted the factory.

"There were flames coming out of the roof of the factory... the street was filled with smoke," Commander David Woods from the MFB said.

"The smoke and flames were quite strong."

No-one was injured.

Detectives are treating the cause as suspicious, with investigations ongoing.

An arson chemist is expected to attend the scene this morning.

More to come

Anyone with information is urged to contact Crime Stoppers on 1800 333 000