A six-month police operation has uncovered an alleged network of mid-level drug dealers accused of swapping stolen property for drugs.
Operation Gambier was launched amid a rise in high-volume crimes including burglaries, car thefts and robberies in Perth's northern suburbs.
That investigation triggered a second operation, dubbed Miron, which focused on a core network of people accused of swapping stolen goods for drugs.
On Wednesday night, a targeted car stop in West Swan uncovered more than 100g of crystal methylamphetamine.
Joondalup district crime team officers also raided properties in Clarkson, Kinross, Mariginiup and Avely, near Ellenbrook, where they found allegedly stolen property - including pinball machines, car parts, machinery and quad bikes - valued at more than $100,000.
"Obviously there are people out there with drug habits who are committing burglaries in the district and they have a go-to person who will swap the property for the drugs," Supt. Charlie Carver said.
"These main people, I would suggest, are in the middle level and are supplying the drugs to the people who are committing the burglaries."
Detectives interviewed 10 people.
By yesterday, two men and a woman had been charged.
Supt. Carver said police would allege the ring- leader was a 22-year-old man who was charged with possessing a prohibited substance with intent to sell or supply and receiving stolen property.
Supt. Carver admitted he was unhappy with crime figures from then north-west metropolitan district but said officers were focusing on areas that had been hit hard and on the people committing and fuelling the crimes.
He said police would try to follow the stolen property trail in a bid to identify bigger targets who profited from illicit drug dealing.