A fire unearthed hundreds of cannabis plants inside a Springvale factory.
Police posted a crime-scene guard outside the Rosalie Street address following the blaze, which was reported by passers-by who saw smoke about 11.30pm on Sunday 18 February.
CFA crews forced entry into the factory and found an extensive hydroponic set-up growing hundreds of semi-mature cannabis plants.
No one was at the factory at the time of the fire.
It’s thought an electrical fault is to blame.
Call Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au with any information.