Police searching for the offenders behind a violent attack in Melbourne's south-west that left two men dead and another hospitalised have released CCTV footage of three cars as part of their investigation.
Emergency services were called to a property on Carmichael Drive in Wyndham Vale on February 11, following reports of a stabbing and shots being fired.
Authorities now believe a convoy of three vehicles arrived at the property, carrying a number of males armed with guns and knives who killed 29-year-old Atem Atem and 22-year-old Ayuel Akuei before fleeing.
A 23-year-old Wyndham Vale man was also hospitalised with life-threatening injuries after the attack, while a pet dog at the premises was also shot and killed.
Two adults and four children who were elsewhere in the house at the time were uninjured.
Fresh CCTV footage has been released of the trio of vehicles stopping on a Wyndham Vale street at 2:41am on February 11, with authorities keen to speak to anyone who recognises the vehicles or the occupants.
In the footage, the vehicles stop in a nearby street before one passenger exits and enters another vehicle, minutes before the attack.
Victims not believed to be targets of attack
While detectives believe the attack on the Carmichael Drive address was deliberate and are continuing to treat it as gang-related, police now believe those killed and injured were likely not the planned targets of the attack.
Victim Atem Atem was a tradesman who moved to Australia from South Sudan in 2003, with investigators stating the victims were "minding their own business" inside the home when the attacks took place.
"We believe that the group is likely to have attended the address as the result of some kind of dispute between street gangs, however those who were killed and injured were either not gang members or had only very loose links," Detective Acting Inspector Nigel L’Estrange said.
"It is likely only through sheer luck that more people weren't killed or seriously injured."
No motive has yet been established for the attack.
Anyone with further information is urged to contact Crime Stoppers on 1800 333 000.