A neo-Nazi acolyte who destroyed incriminating evidence in a murder and lied to West Australian police is appealing his five-year prison sentence.
Corey Joshua Dymock was 21 last year when he was found guilty of being an accessory to the murder of 42-year-old father-of-one Alan Taylor, who was bludgeoned with a hammer as he slept in April 2016.
His partner Melony Jane Attwood hatched the plot with her lover Robert Edhouse, and both were leaders of white supremacist group Aryan Nations.
Their motive for the killing was getting hold of a $1 million life insurance policy they believed Mr Taylor had and to end the relationship Attwood had had enough of.
As an Aryan Nations follower, Dymock was motivated by misguided loyalty to Edhouse.
Mr Taylor, a FIFO boilermaker, was left to die in the Girrawheen house he owned and had allowed Edhouse to live in, while the killers messed up the house to make it look like a burglary, then went to a movie in a bid to create an alibi.
Attwood even made a distressed-sounding triple-zero phone call when she eventually went home.
Dymock appeared in person in the WA Court of Appeal on Wednesday, when his lawyer Paul Yovich compared his client's sentence to that of a woman who was also an accessory to the murder and was handed a much lighter sentence.
After she came clean to police, Dymock did too, while Edhouse and Attwood maintained their false stories, Mr Yovich said.
The state argues Dymock was sentenced appropriately and say his assistance to the killers was an "ongoing, deliberate course of conduct".
The appeal judges will hand down their decision at a later date.
Moments after the trio was convicted, Edhouse attacked Dymock in the dock, throwing punches and threatening to kill him.
Edhouse had to be restrained by security guards and was charged with contempt of court.
He was handed an extra 10 months in prison, on top of the 21-year minimum sentence he and Attwood received for murder.
As it stands, Dymock will be eligible for parole after serving three years.
During sentencing submissions, the Supreme Court of WA heard Dymock had renounced Aryan Nations while in jail, joined a Christian Fellowship group and was placed in protective custody after being "set upon".