The president of a WA white supremacist group known as the Aryan Nations and his female lover have been found guilty of murdering her partner so they could access his life insurance.

Robert Edhouse and Melony Attwood had been on trial for the past month accused of murdering Alan Taylor at his home in the northern Perth suburb of Girrawheen in April, 2016.

Edhouse, 22 was the president of a Neo-Nazi group called Aryan Nations, while Attwood, 37, ran an affiliated group called Aryan Girls.

The sergeant-at-arms of the group, Corey Dymock, 21, also stood trial accused of murdering Mr Taylor, but he was instead found guilty of being an accessory to the murder.

There were angry scenes in court in the wake of the verdict as Edhouse lunged at Dymock, shouting: "I'll kill you".

Edhouse was pulled to the ground by courtroom security officers, while one of his relatives tried to get to the dock.

He was restrained by security guards and one of the detectives who had investigated the murder.

All three offenders were eventually taken separately into the cells.

The relative who tried to reach Edhouse in the dock was allowed to leave the building.
Mr Taylor, a fly-in fly-out worker, was bludgeoned to death with a hammer in what prosecutors said was a plan to kill him, because Attwood had tired of him and wanted to get access to his life insurance.

Edhouse had been staying at Mr Taylor's house and had begun a sexual relationship with Attwood.

A fourth person, an associate of the Aryan Nations group who could not be identified, pleaded guilty to the murder and was given a reduced sentence for testifying at the trial.

The man said he, Edhouse and Dymock had taken it in turns to hit Mr Taylor with the hammer.

Prosecutors told the trial the four had gone to see the film The Jungle Book after the crime to try to create a false alibi.

"Forty-two minutes is all it took from the time this death squad arrived at the house until time they left to execute their plan to kill Alan Taylor," prosecutor Justin Whalley said.

Giving evidence at the trial, Edhouse said it was the associate who had killed Mr Taylor in what he described as an "animal-like" attack.

But the Supreme Court jury, which deliberated for almost four days before delivering its verdicts, disagreed.

Attwood, who had a young son with Mr Taylor, as well as Edhouse and Dymock will face a sentencing hearing in May.

They were remanded in custody.

Edhouse is the son of Andrew Edhouse, who was found not guilty in 2001 of murdering Marc Chabriere, a bikie who was shot dead in his car in Welshpool.

The killing was part of the so-called bikie wars in Perth in the 1990s Andrew Edhouse was associated with the Club Deroes, while Chabrieire was a member of the Coffin Cheaters.

He was not in court to see his son convicted of murder.

The man who tried to reach the dock during the chaos is believed to be Andrew Edhouse's brother.

First combat 18 in Perth shooting Mosques now this bloody nonsense?!