Police in WA have confirmed they were repeatedly called to a Perth house in the weeks before a teenager allegedly killed his mother, brother and sister at the home.
Teancum Vernon Petersen-Crofts, 19, was charged with three counts of murder after his mother Michelle, 48, and eight-year-old brother Rua were found dead inside their Ellenbrook home in the early hours of Sunday.
His sister Bella, 15, was found critically injured in the backyard but died on the way to hospital.
“I can confirm that police have attended at that particular address, not only on the Friday, but in the weeks leading up to that,” WA Police Commissioner Chris Dawson told reporters on Tuesday.
“But these are matters that will be ultimately put before a court and, indeed, the state coroner, so I’m not going to particularise what exactly took place there.”
Mr Dawson said he was confident the actions taken by officers who attended the home in the lead-up to the killings were appropriate in the circumstances.
Petersen-Crofts reportedly presented at a Midland hospital in a “psychotic state” on Saturday, but was sent home.
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Deputy Premier Roger Cook said it was inappropriate to comment on any treatment he may have received, given the matter is before the courts, but promised all the circumstances leading up to the tragedy would be looked into.
“I can’t confirm … the nature of the medical treatment or the efficacy of that treatment,” Mr Cook said.
“Obviously, we all want to get answers, and answers will be sought and we will get those answers.”
Asked whether WA’s mental health system was working, Mr Cook said the state’s services were outstanding but being challenged.
Support is being given to police who attended the crime scene, which a senior homicide squad investigating officer described as “potentially the most horrific” he has ever been called to, Mr Dawson said.
“Doing jobs such as this does bring its cost,” he said.
The Education Department said a range of support services were always available to grieving students and staff.
Petersen-Crofts rambled when he appeared in court for the first time on Monday and was remanded to a maximum-security unit at a psychiatric facility where he is being assessed.
He will face court again next week.
One of the mother’s friends, Toni Ata, set up a crowdfunding page for the funerals that has already exceeded the $20,000 target.
“Her surviving children can’t afford a funeral, or a casket, let alone three,” Ms Ata wrote.
“Right now I feel lost, I want to help and this is the only way I know how.”
If you or someone you know is struggling with mental health call Lifeline on 13 11 14.