A mobile phone potentially tossed from a high-rise apartment where a woman was later found dead could help police crack the unsolved case.
Tatiana Dokhotaru, 34, was found dead in her unit at Liverpool, in Sydney's southwest, on the evening of Saturday, May 27.
CCTV video released on Tuesday reveals what police believe is the Canadian citizen's iPhone 14 being thrown out of her 22nd-storey apartment on Norfolk Street the night before her body was found.
Homicide Squad commander Danny Doherty said the phone was likely destroyed in the fall, but police were still hopeful it could provide a vital breakthrough in uncovering details of Ms Dokhotaru's final hours.
"There's someone there walking the streets now who we believe would have information that may help us or knows who's actually responsible for Tatiana's murder," he told reporters.
"This was a vibrant life that was cruelly taken away."
The phone has never been recovered and Detective Superintendent Doherty urged anyone with information about the device to come forward.
Detectives flew to Canada last week to meet with Ms Dokhotaru's family to gather information about her life and associates in Australia.
"It's important that we provide some answers to the family," Det Supt Doherty said.
"They're obviously devastated from the death of Tatiana."
Ms Dokhotaru's partner Danny Zayat was found with her body and has since been charged with 22 domestic violence-related offences.
A court heard in July the pair were in a relationship for five years, but in May 2022 Ms Dokhotaru took out an apprehended violence order against him.
On May 26 this year, Zayat smashed Ms Dokhotaru's television, causing her to ring triple-zero, but police were unable to locate where the call was coming from, the court was told.
"He's bashing me," she allegedly said to the operator.
Police allege the call ended abruptly before the phone was hurled out of the apartment, Det Supt Doherty said.
No one has been charged in relation to Ms Dokhotaru's death.
Det Supt Doherty also revealed a separate coronial investigation was looking into the police response in the lead-up to Ms Dokhotaru's death.
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