Boxer Danny Green has congratulated a prisoner who attacked Trudi Lenon, one of two women found guilty of murdering West Australian teenager Aaron Pajich-Sweetman in a brutal and shocking attack.
Two days ago, Lenon suffered severe burns after another inmate doused her with boiling water - a suspected revenge attack for what happened to Aaron.
On Wednesday, boxer and anti-one punch campaigner Danny Green took to social media, saying: "my hat is off to whoever carried out this act".
He also wrote: "I hope you get an infection and die a horrid and slow and obscenely painful death".
The post has been seen by thousands of people, including Aaron's dad and stepmother.
"It was very comforting to see that he was supporting us," Aaron's stepmother Veronica Desmond said.
While some believe Danny Green has gone too far, and is even condoning violence against women, others are praising him and want him to run for parliament.
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Aaron's parents believe Trudi Lenon got what she deserved, with Veronica Desmond calling her "the scum of the earth."
18-year-old Aaron Pajich-Sweetman was buried under a concrete slab in the backyard of an Orelia home in 2016.
He was lured to the house by Jemma Lilley and Trudi Lenon so they could act out their twisted killing fetish.
Both Lilley and Lenon are in Bandyup Prison, awaiting sentencing for their crime.
Danny Green did not want to go on camera on Wednesday, but told Seven News he stood by his Facebook post.