The two criminal groups, believed to be linked to Middle Eastern organised crime entities, are responsible for at least 11 arson attacks since June 24, Victoria Police said.
The incidents have caused extensive property damage and put people involved at risk of injury or death.
Incidents include an arson attack on a prestige vehicle business at Oakleigh on June 26. A man arrived about 3am in a grey Audi A4 wagon and set the business on fire, causing more than $1 million damage.
In the early hours of June 27, offenders tried to set alight a Fraser Rise house with five people inside.
When an associate tried to help, his home at Caroline Springs was set on fire too, police said.
A Collingwood business on Smith Street went up in flames on June 29.
Police believe at least three people used hammers to break the front windows of the store about 3am, before pouring accelerant through the business.
One of the men accidentally set fire to himself before he fled with others in a silver SUV.
Police released footage of the incident on Thursday.
"It is only sheer luck that one of these fires hasn't resulted in the death or serious injury of someone, and it's clear they have been lit with very little regard for the safety of anyone else in these areas at the time," Arson and Explosives Squad Detective Inspector Chris Murray said.
Three Victoria Police squads - the Arson and Explosives Squad, the anti-bikie Echo Taskforce and the criminal gang-focused VIPER Taskforce - have united to target the two criminal groups.
They are also working with local officers.
Police also released footage on Thursday of a verbal altercation outside the Collingwood store on June 22, wherein two men are seen arguing with an unknown group.
The altercation is believed to be linked to the ongoing disputes.
"If these groups and the criminals linked to them wanted the attention of police, I can absolutely assure them they now have it," VIPER Taskforce Detective Inspector Mick Daly said.
"I'd ask people to very carefully consider whether this dispute is actually worth it - you now have the full focus of police, and I can assure those involved we will be doing everything we can to ensure they are held to account for their reckless criminality."
Detectives are yet to determine the motivation for the attacks.
Officers urged anyone with information about the identities of the two men seen arguing outside the store and the 11 arson attacks to come forward.
22°C