The grieving family of a 22-year-old Melbourne man fatally shot in a case of mistaken identity have appealed for those involved to come forward, saying the random act of violence has ripped the family apart.

Muhamed Yucel had been playing computer games with six friends in a garage at Keysborough, in Melbourne’s south-east, on May 2 last year.

He said goodbye to his friends and had just opened the garage door to make his way onto a rear laneway when a number of gunmen, allegedly linked to the Comancheros bikie gang, opened fire.

Mr Yucel, known as Mo to his friends and family, was shot in the chest and killed.

Two of his friends were also injured.

“It’s a tragedy,” Mr Yucel’s uncle John Bushby said.

“What’s its done to our close-knit family — [our] very close-knit family — [is] really torn [it] at the shreds.

“None of us look at life the same way as we did beforehand.”

The Yucel family hope new information could bring justice and some closure. Photo: ABC

Police believe the intended target was Farshad Rasooli, a man allegedly linked to the rival Mongols outlaw motorcycle gang, who lived nearby.

A “dark coloured” four-wheel-drive was seen leaving the area, but police believe other cars were also involved in the attack.

It is unknown how many people were involved in the shooting.

“We believe it was a case of mistaken identity and shots were fired at the wrong property,” Detective Inspector Tim Day said.

“This shooting crossed the line. Even in the criminal world. It ended with someone killed for no reason.

“It was an arrogant, ruthless and reckless act.”

‘This ended an innocent boy’s life’

While outlaw motorcycle gang members are notorious for not co-operating with authorities, police hoped someone wracked with guilt over the innocent killing would come forward.

Detective Inspector Day said he thought “dozens” of people involved with the Comancheros would have some information about the shooters.

“This ended an innocent boy’s life,” he said.

“Those mixing in the inner-circle that know what happened and are tortured by the truth of a bad decision … you know this crossed the line.

“Ensure this family gets some measure of justice. Do the right thing.”

Bullet holes could be seen in the garage door of a property near the shooting. Photo: ABC

Bekir Yucel, Mr Yucel’s father, said it was important that justice was served and the family was brought some closure.

“[Muhamed] was just a happy kid who was loved by a lot of friends,” he said.

“We don’t want any other family going through what we’re going through.”

Police also wanted to speak with anyone who saw the dark vehicle or suspicious activity in the area.

-ABC