Another five people have been taken into custody on charges of fighting in a public place and possession of offensive weapons.
Inquiries were continuing.
“The behaviour of these groups is not acceptable, unlawful gang behaviour will not be tolerated and will be met with firm enforcement action,” Paxton said.
Police are seeking footage of the incident and asking witnesses to come forward.
Anyone with information can contact police on 105 or online at https://www.police.govt.nz/use-105, using Update My Report and reference file number 230621/6004.
Alternatively, report information anonymously via Crime Stoppers on 0800 555 111.
A kindergarten in the area had earlier gone into lockdown.
An employee at Maunganui All Day Kindergarten on Miro St, who asked not to be named, said the police had given the kindergarten the all-clear.
“We’re all fine.”
The employee said the kindergarten had gone into lockdown but was not in lockdown anymore.