Police are looking into a video in which an Auckland police officer was filmed pushing a teenager off his bike and then hauling him up against a fence.
The footage, which was posted on Facebook yesterday by Cee La Tonga Taumoefolau, shows a group of teenagers walking along a footpath, believed to be in Mangere over the weekend.
Some distance behind them was another group of teenagers. One of them appeared to be riding all over a road on his bike.
In the extended footage on Cee La Tonga Taumoefolau's Facebook page, that teenager appeared to have a megaphone-looking speaker attached to the handlebars of his bike.
A marked police car then pulls up next to the teenagers in the distance.
Police are heard in the video telling them to "get off the road and go home".
The teenager recording the video then films a police car pulling up next to them.
Two officers in uniform get out of the car and tell the teenagers who were riding all over the road to get off their bikes.
One officer is then filmed pushing a teenager off his bike.
Others around the scene are then heard saying, "record it, record it".
Since the video was posted early yesterday morning, it has been viewed 31,000 times and had nearly 600 shares on Facebook.
Matthew Lamar, who commented on the video and appeared to be the one who was pushed off his bike, said police caught him for some reason and told him to "hurry home".
"Then when they left, I jumped on my bike and saw me, then the man said 'get off the road' and 'f*** off home'," Lamar wrote.
"Then I whispered, just f*** off... then they stopped in front of me, the cops got out of the car, threw me down off the bike, picked me up, threw me against the fence and cuffed me.
"No matter who was there, they can't f*** with the police."
Police say they've been made aware of the video and are looking into the circumstances surrounding the incident.
Counties Manukau West Area Commander Inspector Jason Hewett said police received multiple calls on Saturday regarding a "group of youths acting in a disorderly manner" on both Savill Drive and Alderman Place in Mangere.
"There were reports of excessive noise, alleged fighting and of cyclists weaving in and out of traffic which caused fear for their safety," he said.
"Police have concerns about what can be seen in the video posted on Facebook and accordingly have begun a full investigation into the incident.
"We appreciate the high level of interest however we cannot comment any further until the investigation is complete."