WA Police have confirmed they are investigating a video showing a heated confrontation between a traffic officer and a member of the public which has gone viral on Facebook.
The 45-second video shows an officer responding aggressively to comments made by the member of the public filming the incident.
The man was stopped by the first-class constable for riding a bike without a helmet in Forrestfield about 2.30pm on Tuesday.
At a press conference in Perth on Wednesday morning police confirmed they were investigating a video posted on Facebook by 'John Gds Martin' and that the constable had been spoken to by his direct supervisor.
Inspector Dom Wood said the officer could have dealt with the situation in a more appropriate manner.
"The officer has admitted he could have dealt with things more appropriately and he is going to be spoken to about that," he said.
"We have to make it quite clear that this is a small snippet we saw on Facebook, we haven't seen the entirety of the incident so we have to look into it further.
"This is extremely rare, we don't get these incidents too often.
"This officer has come across someone who has pushed his buttons and tried to get a reaction.
"The officer wouldn't have known he was being recorded in those circumstances."
Inspector Wood would not rule out WA Police taking disciplinary action against the officer.