Dramatic footage of a masked man wearing a military vest and portable radio shooting at a Melbourne home has been released in the hunt for the attacker.

The dual shootings appear to be a targeted attack and might have links to outlaw bikie gangs and Middle Eastern organised crime, police say.

The Bray Street, Reservoir, house was hit twice last week. On Wednesday, Victoria Police’s anti-gang Echo taskforce released CCTV footage of the first shooting, on June 4. 

The incident, early on 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 on the footage.

Watch the footage below:

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

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

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.

A man jumped out of the car firing shots and continued firing the gun as the victim ran for cover back towards his home.

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

The car was later found burnt out in Brunswick East.

“This footage is confronting and in releasing it we’re hoping that someone will come forward with information,” Anti-Gangs Division Detective Superintendent Peter Brigham said.

“The people involved in this have friends, they have relatives, someone knows who is responsible and I’m urging those people to come forward – we don’t want anyone else to get hurt.”