“When it comes to this case,we all want justice for Cassius. The best way we can do that is let the court process take its course. Why would any of us put that in jeopardy?” he said.

“We’ve seen it in the past. Juries can be let go,trials can be adjourned. Justice can be delayed. None of us want that for Cassius.”

Premier Mark McGowan issued a similar response on Thursday.

“They[Cassius’ family] are going through a lot and it’s unimaginable really. I just urge everyone to let the law run its course.”

“It’s before the courts,courts will decide these things.”

Hundreds were in attendance at the Midland gathering on Saturday.

Actor and Yamatji man Ernie Dingo and Fremantle Dockers star Michael Walters were among the crowd,with Dingo also manning the barbecue.

Cassius’ mother spoke to the large crowd,while further vigils and rallies demanding justice are planned go ahead across Australia,New Zealand and even Los Angeles.

“He’s not just my loss,he’s everyone’s loss,even people that didn’t know him,” Turvey said.

“This is the worst thing to happen but this is just amazing,it’s just bringing community together.

“This is black and white,you can see the diversity of people here.”

Rapper Briggs was among several high-profile Indigenous Australians to voice their outrage at the boy’s death.

“Blackfullas will always be in the ‘Wrong place at the wrong time’ in this racist country,” he wrote on Twitter.

“I can’t begin to explain the rage this brings me. It’s too easy to draw a comparison of ‘what if it was a white kid?’”

Australia’s first Indigenous star ofThe BacheloretteBrooke Blurton posted an Instagram story voicing her anger at the killing.

“Recently,a poor 15-year-old called Cassius Turvey passed away because of the injuries he sustained walking home from school ... because of mistaken identity or whatever the reason,” she said.

“F--- knows why. He’s a 15-year-old kid,for f---’s sake.

“We’re just so tired of seeing these senseless acts of violence and racism,that stereotype,happen every day to the result of our young people dying.

“When does it stop?”

A GoFundMe fundraiser in the teenager’s name has now reached more than $480,000.

A public candlelit vigil will be held at Midland Oval in Perth on Monday night for those wanting to pay their respects.