A person has been hit by a car and another taken into custody after reports hundreds of cars blocked Bay of Plenty roads during a car meet-up.
Around 300 cars were driving dangerously and showing "anti-social road user behaviour" on Saturday night, a police spokesperson said.
State Highway 36 was blocked due to the gathering. After the group dispersed, they then moved to the intersection of Welcome Bay Road and Western Bay Link Road.
Police spiked one of the cars and apprehended the driver, the spokesperson said. One person was taken into custody and charges are being considered.
One of the cars collided with a pedestrian, who was taken to hospital with minor injuries.
"The vehicles were dispersed around 2:30am. Police are following lines of enquiry including reviewing CCTV and have not ruled out further arrests or action," police said.
"The reckless driving behaviour of a small group of individuals presents a danger to themselves and to other road users and we continue to monitor, investigate, and hold offenders to account.
"Where we can, police will deploy staff to monitor areas where this activity is happening."
If anyone is concerned about illegal street racing behaviour, police advise calling them as soon as possible with details including number plates and descriptions of those involved, if safe to do so. If police can't get there immediately, the spokesperson said these details are helpful for follow-up enquiries.
"We welcome any information which may assist us with our enquiries, which can include CCTV or video. These enquiries can and do result in enforcement action," the spokesperson said.
"We understand it can be frustrating to be witness to this type of behaviour, however we ask members of the public do not get directly involved."
If people witness antisocial driving behaviour, they should call 111 immediately or can report an incident after the fact by calling 105.
Information can also be provided anonymously via Crime Stoppers on 0800 555 111.