Western Hospital security footage captures the car driving off after dumping shooting victim Sean Edward Walker at the entrance.

Western Hospital security footage captures the car driving off after dumping shooting victim Sean Edward Walker at the entrance.

Police are investigating whether a single shot to the groin that left a Brunswick man fighting for his life had been meant as a warning to the victim.

Sean Edward Walker, 27, was dumped at the emergency room of the Sunshine Hospital in Furlong Road, last night by a male passenger and female driver. They left immediately.

Homicide chief detective inspector John Potter said that in the past gangs had fired a single shot into the leg or thigh of the victim as part of a warning.

Sean Edward Walker was shot and dumped.

Sean Edward Walker was shot and dumped.

Mr Walker, who is known to police, was downed by a single shot.

He has undergone surgery and is in a critical condition in hospital, under police guard. He remains on life support.

‘‘This case has the potential to be fatal,’’ Detective Inspector Potter said.

The victim, who was transferred to the Royal Melbourne Hospital,  has been unable to help police with their inquiries.

Detectives are also investigating whether the shooting has any connection to Middle Eastern crime gangs.

Police are appealing for information about a mystery man and woman who drove the victim to the Western Hospital at Footscray at 10.48pm and have released a CCTV image of the Mitsubishi Verada sedan used to drop Mr Walker off. The vehicle is light-coloured, with a sunroof and rear spoiler.

“We are interested in speaking to anyone that knows Sean’s movements during the past 48 hours,” Detective Inspector Potter said.

“He arrived at the hospital unconscious and hasn’t been able to provide any information to police.

“We need to know what happened to Sean and urge anyone with any information to contact police.

“We also ask the man and woman who dropped Sean off at the hospital to come forward and speak to police.”

Police have appealed for anyone who witnessed the incident or with information about the shooting to contact Crime Stoppers on 1800 333 000 or visit www.crimestoppers.com.au.

twitter Follow The Age on Twitter @The Age