Maribyrnong Crime Investigation Unit detectives are investigating a burglary and theft of more than $1M worth of campervans in Braybrook last month.
It is believed seven Mercedes Sprinter campervans were stolen from a business on Ashley Street between 23 February and 26 February.
Each van is estimated to be worth about $150,000 each.
Four of the campervans were recovered in the Footscray, Flemington and Kensington areas.
Three campervans remain outstanding with Victorian registrations 1QH5ES, 1PZ2LZ and 1PZ2NJ, however the registration plates may have since been removed, altered, or changed.
Investigators have released images of the outstanding campervans.
The investigation remains ongoing.
Anyone who witnessed the incident, has CCTV/dashcam footage or information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.