A man who was shot while waiting to get into a popular Melbourne nightclub remains in a critical condition, as police probe gang links to the drive-by shooting.
The shooting at Prahran venue Love Machine on Sunday morning has claimed one man's life and another man, named in reports as talented soccer player Richard Arow, is fighting for life.
Tributes have flowed on social media for Mr Arow, 28, of Maidstone, but the hospital said on Tuesday he remains in hospital in a critical condition.
Police are examining links to outlaw motorcycle gangs and Middle Eastern organised crime groups as part of a "thorough" investigation into the shooting.
"We think this is quite a specific, targeted attack, but we do not understand the motive, nor the people who are involved in it at this time," Victoria Police Crime Command Assistant Commissioner Tess Walsh told reporters on Monday.
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"Clearly there are tensions escalating."
Security guard Aaron Khalid Osmani, 37, was also rushed to hospital after the shooting and died later on Sunday.
Three other men were injured by the shots fired from a stolen black Porsche SUV about 3.20am.
The Porsche, which was stolen from Dandenong in March, was found burnt-out in Wollert after the shooting.
Ms Walsh said there was no evidence to link the nightclub shooting to other recent fatal gun attacks, including one at a boxing match.
"We are extremely confident we will solve this crime and this horrendous murder," she said.
Detectives are asking for public information to help solve the crime.
