A handwritten note found near a crashsite that killed an Australian mother and her children has police investigating whether the incident was a murder-suicide.
It is believed the note, found 200m from the horror scene which claimed Charmaine Harris McLeod's life and her kids Aaleyn (Ally), 6, Matilda, 5, Wyatt, 4, and Zaidok, 2, was penned by the 35-year-old mother.
McLeod died instantly after attempting colliding with an oncoming truck on the Bunya Highway near Kumbia in South Burnett, northwest of Brisbane, on Monday evening.
Police are now looking into whether the smash, which has left emergency services first on the scene scarred, was a tragic homicide.
Investigators said on Friday the lack of skid marks on the wrong side of the road where the two vehicles collided has indicated it may not have been an accident, and specialist officers as well as homicide detectives are looking at all possibilities.
Queensland Police Commissioner Ian Stewart said "there is a potential that there was an intention for someone to die," The Courier Mail reported.
It comes after it was revealed that on April 15, just weeks before the accident, McLeod posted on her local church Facebook page that she was feeling alone and abandoned after leaving a relationship.
"I feel as if, if you cant or dont grasp God/healing etc, when they think you should have then you just get left behind," she wrote.
"You would think there would be support/help, but very very little, they were always too busy, not one piece of clothing or a piece of bread was offered, let alone shelter.
"I feel as if I've done it alone... these are the things Jesus did, he ate with the less fortunate.. I've asked for prayer before surgery & yes I've had a lot of surgeries but they don't, they do for others though [sic]."
Ambulance Service Assistant Commissioner Stephen Zsombok told news.com.au that victims were trapped inside the burning car and an attempt to save one child they had been able to work on proved unsuccessful.
"These are very seasoned officers and they've explained this as tragic, extremely traumatic with people obviously involved in the car that's caught fire," he said.
"Our hearts go out to the family and friends of those people."
The children's father, James McLeod, shared his devastation in a statement on Tuesday night, according to the Courier-Mail.
"I love them very much and they will be surely [sic] missed with all of my heart," Mr McLeod said.
"They were beautiful souls and were loved by all who knew them."