Auckland police are monitoring any dangerous driving or anti-social behaviour as a gang holds a convention this weekend.
A few hundred members of the Killer Beez have converged on Ramarama, south of the city centre.
The police have set up a checkpoint to check driver-licensing and vehicle compliance.
They said most of the vehicles were up to the required standard.
But they are asking any one to report unsafe, dangerous or intimidating behaviour.
Opinion - Policing operations must be planned with a focus on ensuring life is preserved rather than taken, including from accidents, AUT law professor Kris Gledhill writes.
A resident in Rotorua's Western Heights says she is sleeping with a baseball bat by her bed due to street racing, violence, threats and a riot in her neighbourhood.
Police say the issue of gun violence is not just confined to a single region but there is concern in Auckland about an increase in shootings.
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