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Family dead in ‘double murder suicide’ in Mosman Park

Authorities found no weapon at the scene and are investigating a note left behind in the suspected murder-suicide of a family of four, police said.

  • On Friday, a family of four were found dead at a house on Mott Close in Mosman Park, Perth's western suburbs, including a 50-year-old man, a 49-year-old woman and two boys aged 14 and 16.
  • Police said investigators found a note left at the home but have not disclosed its contents while treating the deaths as a suspected murder‑suicide.
  • St Johns WA confirmed five ambulance crews were dispatched at 8.29am under priority one, remaining on scene with nearby streets blocked off; Detective Acting Inspector Securo said, `There was no violent incident involving the death of the persons or the pets.`
  • WA Police reassured the public that Police Commissioner Col Blanch and Detective Inspector Jessica Securo will hold an 11.30am press conference, saying there is no ongoing public safety risk.
  • Investigators are still trying to establish a timeline, noting police said the call was received this morning and the two teenage boys had significant health challenges.
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PerthNow broke the news in City of Perth, Australia on Friday, January 30, 2026.
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