Australia - Family of four dead plus pets in murder suicide, Mosman Park, WA, 30 Jan 2026

[iamshadow21]

Four people dead after 'devastating tragedy' in Perth's Mosman Park

WA Police are investigating a suspected murder-suicide in suburban Perth after finding two teenage boys and two adults dead in a home in Mosman Park.

www.abc.net.au

 

[dellastreet74]

Why kill the pets?

 

[nao]

Moo...so if there was no violence it would be carbon monoxide or poison/of I guess

 

[dellastreet74]

Moo...so if there was no violence it would be carbon monoxide or poison/of I guess

That was my assumption too.

 

[iamshadow21]

Why kill the pets?

Why does a family annihilator do anything? Some of these people do that. Xavier Dupont de Ligonnès killed the dogs, too.

Apparently there was a note.

MOO

 

[dellastreet74]

Yes he did. It just makes it even sadder.
As for why? I'm going to purely speculate and say it sounds like the children had complex needs and there may have been financial difficulties. The strain probably took its toll. There's always alternatives. These are the actions of a desperate person.

 

[iamshadow21]

Four people, including two children, found dead in Perth in suspected murder-suicide

WA police say both Mosman Park children had ‘significant health challenges’ and had engaged with care services

www.theguardian.com

 

[iamshadow21]

Just putting this here for balance, with the caveat that we have no idea at this time whether the health or disability of the children was even actually a factor in their murder.

“Please Don’t Murder Us” Shouldn’t Be Controversial - Autistic Women & Nonbinary Network (AWN)

If you say that lack of services can lead to parents murdering their disabled children, then every time a parent of a living disabled child complains about lack of services, you have to say they lie, since the children are alive. Or you are a hypocrite. If you say that…

awnnetwork.org

Why we shouldn’t blame the murders of disabled kids on lousy services

by Dick Sobsey Dick Sobsey is the Director of the JP Das Developmental Centre at the University of Alberta in Edmonton. March, 2001 — The murders of a young girl in Montreal and a man in Phil…

notdeadyet.org

MOO

 

[jepop]

Terrible and literally close to home for me (TBC I don't know the victims but live 20 minutes away ). It's always extra shocking and in this case, extremely sad when tragedies such as murders/murder-suicides happen in the area where you live.

At this point, all I can say is I'm thankful none suffered from violence although the instigator moo had a choice and murder is never, ever okay. If you must, please just take your own life but leave your children (and spouse unless a pact) alone...they have a right to live. Moo

 

[iamshadow21]

Terrible and literally close to home for me (TBC I don't know the victims but live 20 minutes away ). It's always extra shocking and in this case, extremely sad when tragedies such as murders/murder-suicides happen in the area where you live.

At this point, all I can say is I'm thankful none suffered from violence although the instigator moo had a choice and murder is never, ever okay. If you must, please just take your own life but leave your children (and spouse unless a pact) alone...they have a right to live. Moo

Murder is always an act of violence; the body fights to survive, feels pain and struggles to breathe, even with overdose or asphyxia. Nobody gets a pass just because they left their victim a good looking corpse not requiring spackle at the funeral home. What was done here was every bit a violation as if the murderer had used a weapon like a knife or a gun.

The killer took away their lives and futures. That's the same however they did it, and however they justified it in whatever lies they wrote.

MOO

 

[jepop]

Murder is always an act of violence; the body fights to survive, feels pain and struggles to breathe, even with overdose or asphyxia. Nobody gets a pass just because they left their victim a good looking corpse not requiring spackle at the funeral home. What was done here was every bit a violation as if the murderer had used a weapon like a knife or a gun.

The killer took away their lives and futures. That's the same however they did it, and however they justified it in whatever lies they wrote.

MOO

Of course I agree murder is wrong, period. I'll rephrase, yes asphyxiation ( (if that is what happened here, say via carbon monoxide for eg ) is a violence perpetrated on the victim. I guess all I'm saying is that if it came down to (for eg) drugging the victims and then asphyxiation whilst unconscious vs a vicious stabbing (for eg) where the victims experienced conscious terror, pain and realisation, then I would feel some relief that the latter did not occur. I think this is the message the police are actually communicating when they say no violence, though we shall wait and see ofcourse. Jmo

 

[iamshadow21]

Of course I agree murder is wrong, period. I'll rephrase, yes asphyxiation ( (if that is what happened here, say via carbon monoxide for eg ) is a violence perpetrated on the victim. I guess all I'm staying is that if it came down to (for eg) drugging the victims and then asphixiating whilst unconscious vs a vicious stabbing (for eg) where the victims experienced conscious terror, pain and realisation, then I would feel some relief that the latter did not occur. I think this is the message the police are actually communicating when they say no violence, though we shall wait and see ofcourse. Jmo

You're probably right, but there is just such a history of minimising in the media when disabled kids are murdered. As though it's acceptable somehow because they were disabled, especially if they were murdered 'gently'.

People tend to focus on disabled as excuse, and not on murdered children. Children who had just as much right to exist and not be murdered as any other child.

MOO

 

[jepop]

You're probably right, but there is just such a history of minimising in the media when disabled kids are murdered. As though it's acceptable somehow because they were disabled, especially if they were murdered 'gently'.

People tend to focus on disabled as excuse, and not on murdered children. Children who had just as much right to exist in murdered as any other child.

MOO

It is wrong to murder your children period, disabled or not.

Your might well be right, the fact the media is already reporting that the children had "health issues" might be the beginning of a minimisation. I find the murder of children by their parents)trusted caregiver especially heinous. I just wanted to make sure my OP made that clear ( if you must suicide, leave your kids alone! A selfish and terrible act of betrayal). If not, I hope this clarifies. Moo

 

[knowledgethirsty]

I have heard that they lost NDIS funding.
2 found hanging

 

[annpats]

".....sounds like the children had complex needs and there may have been financial difficulties. The strain probably took its toll.

Not at all, Mosman Park is one of Perth's most affluent suburbs. The house they lived in is beautiful, and one of the boys went to Christ Church Grammar School, one of Perth's top private schools.

Mosman Park deaths: Family, including two children, dead in suspected double murder-suicide at Mott Close

A mother, father and their two teenage sons, as well as the family’s pets have been found dead in one of Perth’s most affluent suburbs as police investigate a suspected double murder-suicide. LATEST UPDATES.

www.perthnow.com.au

 

[Strangeworld]

Not at all, Mosman Park is one of Perth's most affluent suburbs. The house they lived in is beautiful, and one of the boys went to Christ Church Grammar School, one of Perth's top private schools.

Mosman Park deaths: Family, including two children, dead in suspected double murder-suicide at Mott Close

A mother, father and their two teenage sons, as well as the family’s pets have been found dead in one of Perth’s most affluent suburbs as police investigate a suspected double murder-suicide. LATEST UPDATES.

www.perthnow.com.au

Sometimes people living in affluent suburbs appear to be financially well off, but this isn't always the case

 

[iamshadow21]

Mosman Park double murder-suicide: Wording of note found at scene of Mott Close tragedy revealed

Details of a note discovered at the scene of a ‘devastating’ Mosman Park tragedy in which a family of four were found dead in a suspected double murder-suicide can be revealed.

thewest.com.au

Paywalled. But apparently the note was outside and contained the words 'don't enter' and 'call police'.

 

[iamshadow21]

This is a terrible case, and I don't know all the facts here, but for a general answer to why killing pets when there's a suicide.
If the pets are old, and/or have health issues, and there are nobody trusted who can take care of them later, a person might prefer to kill/have a pet euthanised, rather than have the pet end up in a cage in shelter. A relative/friend left behind after a suicide understands what has happened, a pet would not know why "their human" is not coming back, and why they suddenly are in a strange place. If the pet is younger they could be adopted, but it's less likely with an older pet, most people want kittens and puppies, not fullgrown cats and dogs.

I bought a cat (3 - 4 years old) from a shelter, as I didn't want a kitten, and wanted a cat used being an indoor cat. The cat had been there for over a year, after her owner had died of old age. I remember how totally miserable she was when I saw her the first time, and it took a long time before she started trusting me. I knew I would never be able to even have her staying in a boarding cattery for even a week when going for a holiday. Thankfully I had friends helping me when needed, but they just caught glimpses of her when visiting.

There's also a kind of narcissism family annihilators often exhibit, though, that refuses to recognise that their family could possibly exist in the absence of themself. So they'll kill their kids and their wife and their dog, even, because they don't really see them as existing outside themself. So we can't assume anything about this was in any way altruistic. It could all be just incredibly self-centred, the actions of an individual who rather than just deciding for themselves to die, decided for their partner, kids, and pets, too, without acknowledging that they might feel very differently about their existence.

MOO

 

[dellastreet74]

Another recent article with much more detail. Family in suspected murder-suicide at home in leafy Mosman Park named

 

[dellastreet74]

Another recent article with much more detail: Family in suspected murder-suicide at home in leafy Mosman Park named

A very sad case all round.