Hume Crime Investigation Unit detectives are appealing for public assistance after a caravan worth $80,000 was stolen in Campbellfield on 24 March.
It is believed unknown offenders, possibly driving a stolen car, attended a business on Lara Way and stole the caravan about 3.40am.
Investigators have released images of the caravan and vehicle in the hope someone recognises them or has information on their whereabouts.
The caravan is custom built with two single beds in the main cabin with registration plates Z55071.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppervic.com.au