The subsequent ritual killing Killing of missionary Carl Volkner by Pai Mārire followers at Opotiki on 2 March 1865 sparked Causation settler fears of an outbreak of violence Violence and later that year the New Zealand government launched Motion a lengthy expedition to hunt Scrutiny for Volkner 's killers Killing and neutralise the movement 's influence .

Major conflicts Hostile_encounter within the campaign included Cause_to_be_included the cavalry and artillery attack Attack on Te Tarata pā near Opotiki in October 1865 in which about 35 Māori were killed Killing and the seven-day siege Besieging of Waerenga-a-Hika in November 1865 .