"It has been over a century since this happened and it is time to right that wrong.
"I am proud to announce the Crown intends to bring in legislation to pardon Rua Kenana and this agreement with his whanau and followers of the Iharaira faith is another step on that journey.
"It was a heart breaking moment in the history of our nation. His descendants and followers of the faith have suffered immeasurably since the police actions of that fateful day."
Government representatives will sign the agreement at Maungapohatu Marae on September 9, and will also apologise to the descendants of Rua Kenana and Nga Toenga o nga Tamariki a Iharaira.
Legislation will be introduced to enshrine the pardon in law.