Tier A - Overview
Christchurch mosque shootings

Tier A - Overview

Date: March 15, 2019

Location: Christchurch (New Zealand)

Summary: Christchurch mosque shootings is remembered as a shooting where an attacker used firearms to inflict rapid harm in a defined setting. The prevention lesson is how quickly a pathway can accelerate once access and opportunity align.

Key prevention lens:
  • Escalating grievance or fixation tied to a person, place, ideology, or perceived injustice.
  • Leakage: statements of intent, threats, or ominous communications that merit documentation and follow-up.
  • Preparation behaviors: access-seeking, planning, acquisition, testing, rehearsal, or sudden "energy burst".
  • Focus on early reporting, access management, and practiced protective action.