Community leaders' pleas for peace are being ignored as fresh outbreaks of violence have become a daily occurrence in the lead-up to the Tonga v Samoa Rugby League World Cup clash in Hamilton on Saturday.
A police spokeswoman said the group were allegedly armed with poles and sticks and were part of a crowd of between 150 and 200 people on Thursday night.
The arrests follow several days of violence in the lead-up to a crucial Rugby League World Cup game in Hamilton between Samoa and Tonga.
Video has circulated online of a mass street brawl in nearby Otahuhu, and there have also been reports of violence in Otara.
Tongan Advisory Board Chair Malino Mako and Manukau Ward Councillor Efeso Collins, from Samoa, appeared on The AM Show today pleading with supporters to behave.
"I just think this is excitement gone overboard and it's encouraging our young people especially to learn how to channel this," Collins said.
"This is young people trying to manage their impulses and when you get so excited it boils over."
Mako said rivalry was not a bad thing - but it had to be kept "in the spirit of the game".
"We need to let the rivalry be on the field.
"At the moment there are a few people who are tainting that respect. We don't need that.
Mako said the brawls mainly involve young people, "but it's also middle-aged".