Police have released CCTV footage of two late-night shootings at a house in Melbourne's north in the hopes of finding the assailants, one of whom was wearing a military-style vest, walkie-talkie and balaclava when he fired the shots.

Key points: The CCTV vision shows a man narrowly avoiding being hit as he runs from gunfire

The CCTV vision shows a man narrowly avoiding being hit as he runs from gunfire Four nights earlier, the cameras captured a man in military-style clothing kicking and firing at the front door

Four nights earlier, the cameras captured a man in military-style clothing kicking and firing at the front door Police are looking at links to Middle Eastern organised crime and outlaw motorcycle gangs as part of their investigation

The shootings, at the same home in Reservoir, were four days apart and are being investigated by Victoria Police's anti-gang Echo taskforce.

The first incident, in the early hours of June 4, showed a man wearing the distinctive vest and what appeared to be a portable radio on his shoulder as he shouted an expletive-filled demand for someone to come out of the house.

"Open up, open up," he is heard yelling.

He fired five shots into the home and two parked cars, but the four people who were home asleep at the time were not injured.

He then left the scene in a car which was waiting for him in the street.

Police believe that car was a 2016 red Holden Commodore that was later found burnt out in the outer-northern suburb of Mickleham.

Four nights later on June 8, at the same house, a 20-year-old man was shot after meeting with someone on the street about 1:30am.

The victim approached what was believed to be a black Porsche four-wheel drive before a man jumped out and fired shots at him.

Police said the attacks appear to be targeted. (ABC News)

The CCTV footage showed the victim fleeing across the lawn back to the house as the offender appeared to keep firing his gun.

The victim was taken to hospital with non-life-threatening injuries.

The victim was known to police, but investigators did not say whether he knew his attacker.

Police say 'serious offence' was likely targeted

"We believe the victim is extremely lucky to be alive," said Detective Superintendent Peter Brigham from the state Anti-Gangs Division.

The black Porsche was later found burnt out in the nearby suburb of Brunswick East.

Between the first and second shootings, the 20-year-old's car was set on fire outside the Reservoir property.

Police said they were looking at possible links with outlaw motorcycle gangs and Middle Eastern organised crime in relation to the shooting.

Superintendent Brigham said in releasing the footage, they hoped people would come forward with information.

"This is a very serious offence, we have a large number of detectives working on this case and we believe that the public have information that will greatly assist us."

"I want to also reiterate that this appears very much a targeted attack and at this stage there is no evidence to suggest the shootings are linked to any other incidents we're aware of," he said.