Sydney is reeling from a brutal double stabbing in Quakers Hill that claimed two lives on December 28, with police revealing chilling new details about the “disturbing” relationship behind the tragedy — including that the accused and victim maintained contact despite their separation.

A 47-year-old man has been charged with two counts of murder after allegedly stabbing his former partner, Anaseini Waqavuki, 38, to death in the kitchen of her Illabo Street home, and critically injuring her new partner, a man in his 30s, who later died in hospital. The accused handed himself in to Blacktown Police Station shortly after discarding the alleged murder weapon at a nearby service station.

In a tense update, investigators confirmed the incident is domestic violence-related, stemming from the prior relationship between the accused and Waqavuki. Superintendent Jason Joyce described the scene as “traumatic and confronting,” noting the victims sustained multiple stab wounds. “On the surface, it appeared a normal, happy family,” he said, but early inquiries uncovered a “far darker” dynamic of control and fear.

Young couple killed in an alleged double murder in Sydney's north-west | 9 News Australia

Shockingly, police revealed the ex-partners “still had contact with each other,” a detail that has shifted the narrative and intensified public outrage. This overlooked warning sign — ongoing interaction post-separation — is now central to the investigation, highlighting common red flags in domestic abuse cases often missed by outsiders.

Neighbours reported hearing screams in the early hours but were stunned by the violence, recalling the accused as unremarkable. The sudden eruption has left even seasoned detectives shaken, underscoring how abuse can escalate fatally behind closed doors.

As detectives piece together the final hours, authorities urge caution against speculation while warning the most disturbing elements may yet emerge. Support services like 1800RESPECT remind victims that help is available.

The community grieves two lives lost in senseless violence, demanding stronger protections against hidden dangers in relationships.