Grainy footage of men in two cars has been released on Mother's Day as police search for the drive-by "cowards" who fatally shot a grandmother inside her home.
Authorities are yet to charge anyone over the attack in Ambarvale, on Sydney's southwest outskirts, on April 14.
Three people got out of a sedan and fired shots at a house on Dickens Rd, where 65-year-old Kim Duncan was fatally hit, police said.
Two other people in the home, a 21-year-old woman and 34-year-old man, were not injured.
On Sunday, police released CCTV vision in an attempt to find the shooters.
It shows a blue sedan driving down a quiet road in the middle of the night.
Other dark, grainy footage shows the sedan, along with a white SUV, doing a U-turn at the bottom of a road before parking on the side of the street.
Men from each of the cars exit and exchange words, before driving off.
Police said it was targeted attack but were unclear if Ms Duncan was their intended victim.
The house occupants, who authorities believed had lived there for six to eight weeks, were known to police.
Detective Superintendent Grant Healey called the shooting abhorrent, reckless, catastrophic and tragic.
“Your mother and the grandmother to your children has been shot by cowards that stood out the front of the house,” he said.
Police believe three people got out of the sedan, but are unsure how many opened fire at the house.
Two of the wanted men are described as aged in their 30s, about 180-185cm tall, with one being white and the other of Middle Eastern appearance.
The third male is believed to be a Pacific Islander aged in his 20s, about 180cm tall, with a large build.
Speaking after the shooting, nearby resident Louise Hoser said she heard gunshots soon after 10.30pm.
“Within 20 minutes I went to bed and my bedroom just lit up with the police lights ... they didn't have the sirens going, but there was a lot of police presence and ambulances up there,” she told AAP.
“I woke my house up to alert them that something was happening ... it was very distressing to hear the family, and shocking to find out she was an elderly lady.”
