His insistence wore her down. She spent some time with him, although she wanted a male friend around, too. On the afternoon of the day he killed her, Thompson texted Lachlan that he was with Anderson. “I’m bigger than you,” he wrote. Lachlan told Anderson’s mother, who contacted her daughter. “She knows he’s here,” Anderson wrote to a friend.
Mackenzie Anderson.Credit: Instagram
At that point, things escalated. Thompson shouted at Anderson, that she’d ruined his life. He took her phone off her. He cried and said she didn’t appreciate what he did for her. She began asking him to leave. He began moving knives around in the kitchen. The male friend stayed at her apartment, but Thompson told Anderson that he was not afraid of him.
The two men left, but Thompson broke in again, using a ladder to climb onto her balcony. He used Anderson’s phone to text her mother, Tabitha Acret. “I’m with her,” he wrote. “She wants me to talk to you.” Acret refused, replying that they should not be together. Anderson again told him to leave; he took her keys on the way out.
She called triple zero at 10.39pm. At 10.45pm, she texted a friend that Thompson was breaking in, again. “He came at me with a knife,” she said. “He’s still a f—ing freak.” Anderson texted Thompson’s mother, with whom he was, the parole orders said, supposed to be staying. “He stole my phone and is messaging my mum being creepy and mum’s called the cops.”
Three minutes later, she texted her male friend. “Tyrone’s back.”
That’s when neighbours began to hear yelling. They saw her standing between the blinds and the window, which she was hitting with her fists. “She looked terrified,” the agreed facts said. They heard Thompson goading her to stab him again. They heard him yell, “You stabbed me.” They heard him shout, “Stab me, stab me, stab me.”
‘It took as many times to stab her till she f—en stopped. That was the end of it.’
Tyrone Thompson
Her male friend rushed back after her message. When he arrived, he saw Anderson lying on the floor with Thompson leaning over her, stabbing her repeatedly. He called triple zero and ran. Police arrived at 10.53pm, and saw Thompson sitting cross-legged at the top of communal stairs. Police rushed to check Anderson, as Thompson demanded they assist him.
“I’m bleeding out everywhere,” he said, according to the agreed facts. “Man, can you please help my blood pressure?”
Police told him to be quiet; they were trying to check on Anderson. They found a broken knife handle on her chest and a knife blade underneath her body. Thompson, the facts said, “continued to scream out about and seek assistance for his hand”.

Tabitha Acret, mother of Mackenzie Anderson.Credit: Nine
Acret, Anderson’s mother, told The Daily Telegraph that it was a shame Thompson took so long to plead guilty. “He was running with a self-defence plea,” she said. “Mackenzie had more than 70 stab wounds and more than 10 of them apparently could have been fatal, so I don’t think there was any self-defence.”
Thompson will face a sentencing hearing on April 28.
If you or anyone you know needs support, call Lifeline on 131 114, beyondblue on 1800 512 348, Kids Helpline on 1800 55 1800, or the National Sexual Assault, Domestic and Family Violence Counselling Service on 1800RESPECT (1800 737 732).
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