Police are investigating many reports of more than 100 cars regarding illegal street racer activities in Rotorua.
Two people were also arrested for disorder after bottles were allegedly thrown at police vehicles trying to disperse the group.
A spokeswoman said police received 27 calls between midnight and 2.30am and staff were investigating “numerous” reports of more than 100 vehicles “engaging in illegal street racer activities”.
She said police dispersed the group, and traffic stops were in place on Hemo, Ngongotahā and Te Ngae roads.
She said the group caused disruption along State Highway 5.