Cyclists riding near Waratah Road in the Valley Heights suburb of the Blue Mountains reported finding three children under the age of five and a woman in her 40s with multiple stab wounds early Sunday afternoon. Police believe the attack occurred only minutes before the cyclists arrived. The victims were discovered inside a hatchback that had partially turned into a vacant block near a fire trail leading into the national park, with the woman standing outside the vehicle.

Passers‑by administered first aid while calling emergency services, but by the time ambulances reached the scene one of the children had already died. The remaining two children and the woman were rushed to Westmead Children’s Hospital and Westmead Hospital respectively in critical condition.

New South Wales Police have said they are not looking for any additional suspects in connection with the incident. Blue Mountains Area Commander Superintendent John Nelson confirmed that the woman is not known to police and that the children’s father was at work when he was notified of the tragedy.

Local residents said the street was unusually quiet during the attack. Peita Davies, who lives on Waratah Road, said neighbours did not recognise the victims and that “nobody heard anything.” Glenn Lyall, another resident, initially thought the police presence indicated a traffic collision before learning of the stabbing.

The Valley Heights stabbing marks the fourth domestic‑violence‑related death reported in New South Wales within a 24‑hour period. Earlier incidents included the decapitation of a 70‑year‑old woman in Mole Creek, the fatal stabbing of a woman in her 90s in a Bondi apartment, and a 23‑year‑old woman killed in Kooringal, Wagga Wagga. Premier Chris Minns said he would address the media on Monday, expressing sympathy for the families and condemning the “shocking crimes.”

Data from the Australian Institute of Health and Welfare indicate that, in 2024‑25, a woman is killed by an intimate partner on average every 11 days, underscoring the broader pattern of family‑based violence that the recent spate of killings reflects.