Detectives from the Echo Taskforce have executed a number of search warrants and arrested four men as part of their ongoing investigation into aggravated burglary and extortion related offences.
Four search warrants, which targeted members of the Rebels outlaw motorcycle gang, were executed in Point Cook, Carrum Downs, Greenvale and Traralgon.
A further search warrant was also executed at the Rebels outlaw motorcycle club house in Sunshine West.
Items seized during the warrants include an allegedly stolen motorcycle, cars, a large amount of stolen property and cash.
A 28-year-old Sunshine West man, 22-year-old Point Cook man, 39-year-old Greenvale man, and a 32-year-old man also from Point Cook, were arrested during the operation.
All remain in custody and are assisting police with their enquiries.
The investigation remains ongoing.