Police are reportedly investigating outlaw motorcycle gang extortion attempts after the Sunday morning shooting at Love Machine nightclub in Prahran.

37-year-old security guard Aaron Khalid Osmani was killed after he was struck in the face by a bullet during the drive by shooting.

A 28-year-old Maidstone man is fighting for life after the shooting at 3am on Sunday.

Four other people have been injured, three with gunshot wounds and one with a head injury.

Police are reportedly investigating outlaw motorcycle gang extortion attempts after the Sunday morning shooting at Love Machine nightclub in Prahran.

The Age has reported today that two motorcycle gangs have been linked to the nightclub.

One gang have been regularly attending the club and terrorising patrons and staff.

“They’re storming through the front door. They’ll menace patrons, threatening staff, and then they’ll basically just drink for free,” Cameron Houston, Senior Crime Reporter at The Age, told 3AW Breakfast.

The nightclub owners have reportedly changed security guards in recent weeks in an attempt to stop bikies from entering.

Mr Houston said that a second motorcycle gang was asked to intervene in the dispute, and that gang is now demanding payment for their services.

The vehicle involved in the shooting, a stolen black Porsche, was found torched in Wollert at around 5am on Sunday.

Police are urging anyone with information on the shooting to contact CrimeStoppers on 1800 333 000.

Press PLAY below to hear what Cameron Houston, Senior Crime Reporter at The Age, had to say on 3AW Breakfast.