Hinewhare Harawira has stepped down from an anti-violence campaign following allegations her three adult sons beat a 12-year-old boy.
Ms Harawira announced her temporary resignation from Te Pataka Ki Waitangi late yesterday.
It is understood she wants to focus on the matter involving her three sons, Mau Harawira, 30, Enesi Zane Taito, 25, and Tohora Harawira, 22.
The men have been charged with the assault of a boy at a Blockhouse Bay property last August.
According to a police summary, they allegedly followed the youngster into his house and hit and kicked him repeatedly before making off with various items including the boy's PlayStation 3 console.