About 15:15 local time on Wednesday, emergency services responded to reports of a drive-by shooting at a home in Merrylands West, where a man in his 40s was found dead at the scene. Police believe the victim had arrived at the home just moments before he was shot in the doorway.
Detective Superintendent Simon Glasser said the victim had no known links to organised crime, but had associated with people who reside at the address. The residents of the home are "very well known to police" with links to organised crime, and the man who was shot was "quite likely" a business associate.
Asked if investigators were treating the case as a suspected mistaken identity, police said: "Tragically, that is a possibility that the wrong person has been shot by these offenders."
The attack follows a similar killing on Tuesday, when Marco Tapia, a university student in his 20s with no criminal ties, was shot dead during a home invasion in Glen Alpine in Sydney's southwest. Police say the Tuesday shooting appears to be an "innocent life" taken by organised crime.
New South Wales Police Commissioner Mal Lanyon described the killing as "completely unacceptable". "The fact that what appears to be an innocent life was taken [on Tuesday] is something that no community should accept and no community should live in fear of violence," Lanyon said. "I don't want any innocent member of the community to be impacted by organised crime. We will not tolerate it."
After the Tuesday killing, a known organised crime figure posted a message on social media saying: "popped the wrong person, didn't even get the right house."
Earlier this year, a Sydney grandfather was allegedly kidnapped and murdered in what police believe was a case of mistaken identity. Chris Baghsarian, 85, was taken from his home in a pre-dawn raid and his body was found two weeks later near a golf course. Several people have been arrested and charged in that matter. Last year, a Sydney plumber was also shot dead in front of his family home in what police said was a mistaken identity killing.