Western Australia Police are facing renewed scrutiny after video footage surfaced showing a Broome woman falling to the ground during an interaction with an officer in the state's Kimberley region.

The footage, which has been viewed more than 600 times since being posted to social media on Sunday, shows Broome resident Corrina Sebastian falling backwards as a police officer extends an arm toward her. The officer is then seen standing over her as another person approaches to check on her condition.

Ms Sebastian told the ABC she had been out celebrating a family member's birthday before being attacked by two women later that night.

"I got mobbed … that's when I fought my way out, I got my mobile phone and rang the cops," she said, adding the last thing she remembered was speaking with police.

Ms Sebastian said she only became aware of the incident after seeing the footage online and expressed distress at what had occurred.

"[I'm] pretty hurt," she said, noting that she is a grandmother who works in the local area.

WA Police have confirmed their internal affairs unit has travelled to Broome to investigate the incident.

Kimberley Police Acting Superintendent Matt Garnaut told the ABC the incident is under active investigation.

"What happened during this interaction will form part of a police investigation led by the internal investigations unit," he said.

"This incident will be fully investigated and commenced immediately."

It remains unclear what led to Ms Sebastian falling or whether she was the one who contacted police, he added.

The latest incident comes amid heightened criticism of WA Police following a series of troubling interactions with Aboriginal people caught on camera.

In February, another circulated video showed a police officer forcefully pushing an elderly Indigenous man to the ground at Broome's Male Oval. The officer was subsequently stood down and later disciplined, although WA Police have not disclosed details of the disciplinary action.

"Disciplinary proceedings have now concluded and suitable disciplinary action has been taken in relation to this matter," a spokesperson said at the time.

"The officer will soon return to full duty but remains subject to that disciplinary action."

Following that incident, WA Premier Roger Cook described the footage as "very confronting" and urged a prompt investigation.

"What I saw, it wasn't appropriate behaviour, but obviously the police will investigate that and look for a speedy investigation and the outcomes of that," he said.