Auckland police are monitoring a memorial ride involving about 40 motorcyclists around areas of the city.
Acting Inspector Callum McNeill, Waitematā Police, said they were aware the ride was taking place in parts of the city and said there would be "visible Police presence in the area and we are monitoring the situation".
The approximate 40 motorbikes set out from Beach Haven and travelled on the Auckland motorway network south, before heading north again to Schnapper Rock, McNeill said.
"Police will be identifying any offending that occurs and are following up with enforcement action.