NRL Indigenous stars, Canberra Raiders five-eighth Jack Wighton and South Sydney Rabbitohs fullback Latrell Mitchell, have thrown their support behind the female Boomanulla Raiders side, who were the victims of the alleged abuse.

The Boomanulla players were allegedly subjected to racist slurs - such as "dirty black dogs" - from a group of male spectators in their match against Harden Worhawks on July 31.

The spectators were allegedly told to stop by the grounds manager and Harden players, but were not removed from McLean Oval.

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CRRL's disciplinary committee is investigating the racism and general manager Mark Vergano said a decision was not far away, but off-field matters took more time to hand down findings than on-field incidents.

He said he could not comment on the incident directly, as it was still under investigation.

"The NRL's Code of Conduct and tough love policy clearly stipulates against racism and is very clear about it, and we as a league abide by and utilise those frameworks without question," he said.

"There's a process to follow ... [but] CRRL does not condone racial vilification or discrimination of any kind."

Boomanulla player Beth Cooper, a Wiradjuri woman, said she was sick of being silenced when racism reared its head and that was why she spoke out. She said since the story broke with NITV, community support and outrage had followed.

"Every Aboriginal person can resonate with it, growing up you're told to keep your head down, don't rock the boat ... but these behaviours are unacceptable and shouldn't ever be allowed to continue," she said.

"It has been a really good response. It began as something that was really negative to ... having people be so outraged, we're already outraged, but just to have people in the community also back us up is empowering."

The incident follows Carlton's Indigenous star Eddie Betts once again having to speak out about the realities of racism in the AFL, after Adelaide Crows player Taylor Walker's racial slur on July 17.

Cooper said it was disappointing to see it happening locally, and in the top leagues such as the AFL, but having NRL stars - such as Wighton and Mitchell - share the story helped raise awareness to hopefully put an end to it.

"It was really disappointing, and it was disgusting to see it in the CRRL," she said.

"We're just trying to raise awareness about it so there's a bit more traction, a bit of pressure on the CRRL to speed things up a bit and to come back to Boomanulla with something a bit more meaningful than what we've already received."