Kim Duncan, 65, suffered a gunshot wound to her leg inside a home on Dickens Road in Ambarvale, south-west Sydney, at around 11pm on April 14.
It’s alleged the occupants of a black sedan fired nine shots into the home before driving off.
It is understood that Duncan was in a front lounge room when a bullet hit her.
Paramedics tried for about an hour to save her, but she died at the scene.
Police have released CCTV footage appearing to show three men who were seen in the area at the time.
The first man is described as Caucasian, 180cm tall, with thin build and in his 30s.
The second man is described as Middle Eastern, around 185cm tall with athletic build and in his 30s.
And the third man is described as Pacific Islander, about 180cm tall with a large build and in his 20s.
Two cars, a white SUV and a blue sedan, were also seen driving off.
Anyone with information about the men or the cars, including dashcam or CCTV, is urged to contact CrimeStoppers.
