A bikie has been assaulting heavy-haulage tow operators in a bid to secure an illegal share of the lucrative industry.
Police said a Hells Angels member had been linked to several incidents of tow-truck operators being warned off jobs.
Detective Superintendent Peter De Santo said the bikie was then securing the job as an unlicensed sub-contractor with a transport company.
Superintendent De Santo said there had been altercations between the bikie and other operators away from accident scenes, but would comment on whether these had occurred at homes or businesses. He said the other operators had felt intimidated.
The jobs responded to by the bikie had all been in the city area.
"Police are not going to tolerate the intimidatory tactics, or the standover tactics, or the threats of violence against other people going about their daily business," Superintendent De Santo said.
"We have had approaches from other concerned companies, although we have no complaint at this time upon which we can act.
"We have no reports of him using his colours at the sites, however we believe he is heavily tattooed with the insignias of the Hells Angels over his arms."
There is no allocation system for the heavy haulage industry, as exists for smaller vehicles. Superintendent De Santo said this could mean some accidents were handled by whoever arrived first on the scene.