One of the men accused of murdering Indigenous teenager Cassius Turvey has recalled joking around with his co-accused before the alleged attack.
The 15-year-old Noongar Yamatji boy died in hospital 10 days after prosecutors say he was chased, knocked to the ground and "deliberately struck to the head with a metal pole" in Perth's eastern suburbs on October 13, 2022.
Aleesha Louise Gilmore, 23, her then-boyfriend Jack Steven James Brearley, 24, and his mates, Brodie Lee Palmer, 29, and Mitchell Colin Forth, 26, are on trial in the West Australian Supreme Court for Cassius' murder.
Prosecutors say Brearley delivered the fatal blows while he was "hunting for kids" because somebody had smashed his car windows and allege Forth, Palmer and Gilmore helped him, and knew his intent before the incident.
Brearley denies he struck Cassius with a pole and claims he only punched him after the teen knifed him, and it was Palmer who did the deed, which he denies.
Palmer has told the jury he was in his ute when the incident happened and he heard Brearley call out that he'd been stabbed.
"I got out of the car at that point. I was barefoot and I walked through the bush and through the creek," he said from the witness box.
"I came across Jack standing, bent over Cassius on the ground and yelling at him for a name of the kid who had the knife.
"That's when I pushed Jack to the side and said 'what are the f*** are you doing?'."
Palmer also gave evidence about his friendship with his co-accused, telling the jury Brearley had sold hundreds of thousands of dollars worth of cannabis that Palmer had grown and supplied him.
He said that on the day Cassius was injured, he and his girlfriend had picked up Brearley, Gilmore and Forth and driven them to their home in the Perth hills where they were drinking and chatting.
"Talking about stupid stuff we would do ... talking about going into the bush and doing skids ... we did it frequently," he told his lawyer Christian Porter.
"Just mucking around, just a normal day."
Palmer, who also told the jury about his methamphetamine use, said the group later drove to the home Gilmore and Brearley shared with her family because Gilmore's younger brother had a problem.
He said they stopped along the way at a muddy field to do burnouts, where he almost rolled his ute.
He also said that upon arrival at Gilmore's home, he learned the problem her brother had was some people were coming to the house.
The jury previously heard it was a threat to "run through" the home.
"I didn't think it was really going to happen," he said.
"I took it as a joke."
Video played to the court shows Palmer punching a tree outside the house with a pair of knuckle dusters.
"I was just showing off to the group because I had them," he said.
The trial continues.
