Hundreds of illegal motorcyclists rode through Auckland streets during the weekend.
Many were on dirt bikes, which are not allowed on the roads, while others weren't wearing helmets.
One video posted online shows a group blocking part of the motorway as riders do burnouts and fill the road with smoke. Others are doing wheelies while not wearing a helmet, and some were on unregistered dirt bikes.
In another video, hundreds of riders fill suburban streets and weave between traffic.
Police say they're aware of the riders taking over streets on Saturday and say they will follow up any identified offences.