The union was working with the schools and was offering support to all involved.
It would not comment further until the police have finished their investigation.
In May, NZME reported seventeen complaints of misconduct or foul play held at various age-group levels had been reported to the union.
In one on May 7, a Rangataua Premier player allegedly elbowed a player from the opposing Te Puna team and that player suffered a broken jaw.
A complaint by a Te Puna Club representative, supported by witness statements, was upheld by the union's disciplinary officer at a hearing on May 13.
The accused player was suspended for 12 weeks, including from sideline duties such as passing out water bottles to teammates.
At the time, Bay of Plenty Rugby Union community rugby manager Pat Rae said the union treated incidents like that "very seriously" and foul play, whether on the field or from the sidelines, would not be tolerated.