What began as a heartbreaking family tragedy in the affluent suburb of Mosman Park has taken an even darker and more disturbing turn.

Western Australia Police confirmed late this afternoon that during a detailed forensic examination of the Clune-Goasdoue family home on Mott Close, officers discovered a second handwritten note hidden beneath a deliberately loosened floorboard in Jarrod Clune’s home office. The discovery, made at precisely 2:14 pm today, has dramatically altered investigators’ understanding of the sequence of events and has forced prosecutors to re-evaluate the entire case timeline.

The four victims—Jarrod Clune (50), his wife Maiwenna “Mai” Goasdoue (49), and their sons Leon (16) and Otis (14)—were found deceased in their home on the morning of January 30, 2026. Initial findings pointed toward a suspected double murder-suicide, with early indications that the parents had taken their own lives after allegedly ending the lives of their two severely autistic sons.

Now, the contents of the newly discovered note—described by police sources as “structured, deliberate, and deeply disturbing”—appear to reveal far more premeditation than previously believed.

The Hidden Note: A Step-by-Step Confession?

According to senior detectives briefed on the matter (who spoke on condition of anonymity due to the ongoing investigation), the note was folded tightly and placed inside a small plastic sleeve to protect it from moisture. It was positioned under a section of flooring that had been intentionally pried up and re-nailed loosely, suggesting the author wanted it to be found—but not immediately.

Key revelations from the document, as outlined in today’s police media update:

The note is written in Jarrod Clune’s handwriting (confirmed by preliminary forensic document analysis).
It contains a detailed timeline of the family’s final hours, including exact times for when each family member was “assisted to pass.”
The document lists specific methods used (though police have refused to disclose these publicly to preserve investigative integrity and family dignity).
Most shockingly, the final paragraph includes instructions for “the next phase”—a cryptic set of directions that appear to outline a broader plan or message the author intended to be discovered after the fact. Police have described this section only as “concerning in its forward-looking nature” and are urgently examining whether it points to accomplices, additional targets, or a manifesto-style justification.

One senior investigator told reporters off the record: “This isn’t just a goodbye letter or even a simple explanation of despair. This reads like someone documenting their actions with the expectation—or perhaps the hope—that others would one day understand the reasoning. The floorboard concealment suggests they wanted control over when and how it was revealed.”

Timeline Collapse: What Changes Now?

The initial crime scene assessment placed the deaths sometime overnight between January 29 and the early hours of January 30. The first note—found taped to the inside of the front door and reading simply “Don’t enter. Call police.”—was discovered by a disability support worker at approximately 8:15 am on the 30th.

The discovery of the second note under the floorboard has blown apart that timeline in several critical ways:

Premeditation evidence

 — The note contains dated entries stretching back at least six weeks, suggesting the plan was formulated well before any reported “final straw” moment.

Financial and legal instructions

 — The document includes precise directions for the disposal of family assets, superannuation funds, life insurance policies, and even the family’s two dogs and cat (all of whom were also found deceased). These instructions appear to have been drafted with legal precision, raising questions about whether the couple consulted professionals or researched estate law extensively.

Psychological state

 — Passages describe months of mounting despair over the perceived failure of the NDIS system to provide adequate funding and respite care for Leon and Otis, both of whom required 24/7 high-level support due to severe autism and associated behaviours. Yet the tone is described as eerily calm and methodical rather than frantic.

Prosecutors had been preparing to treat the case as a straightforward (albeit tragic) murder-suicide. Now, the existence of this second document has forced WA Police to widen the scope of the investigation, including re-interviewing support coordinators, NDIS case managers, extended family members, and even neighbours who may have noticed unusual behaviour in the weeks leading up to January 30.

Community in Shock, Debate Reignites

The revelation has sent fresh shockwaves through Perth’s disability support community and beyond.

On social media, reactions are polarised:

Many parents of autistic children have expressed horror mixed with grim understanding: “This is what happens when families are left to drown. The system failed them long before this.”
Others are furious: “No amount of NDIS cuts justifies planning the murder of your own children. This note proves it was calculated cruelty, not desperation.”
Conspiracy theorists have already begun circulating wild claims: that the “next phase” instructions point to a larger euthanasia pact, involvement of a third party, or even a protest against government disability policy.

Premier Roger Cook, who described the original tragedy as “unimaginable” on January 31, issued a brief statement this afternoon: “These new findings are deeply distressing. WA Police will continue their thorough and sensitive investigation. Our thoughts remain with the extended family and the disability community during this unimaginably painful time.”

What Happens Next?

Police have confirmed that the note is undergoing full forensic examination, including handwriting analysis, ink dating, and digital reconstruction of any erased or overwritten sections. Detectives are also searching for additional hidden items in the home and reviewing the family’s computers, phones, and financial records for any further evidence of planning.

The WA Coroner has been notified, and an inquest is now almost certain to examine not only the immediate circumstances of the deaths but also systemic failures in disability support funding and mental health intervention for carers.

For now, the people of Mosman Park—and indeed the entire state—are left grappling with a tragedy that grows more sinister with every revelation. A once-quiet street in one of Perth’s most desirable suburbs has become the epicentre of a national conversation about despair, disability, and the limits of what any family can endure alone.

As one neighbour, who asked not to be named, said through tears: “They seemed like the perfect family from the outside. Now we’re learning they were screaming for help—and no one heard them until it was far too late.”