You know, the New Zealand Police did carry out the attack on the Mosque.

They actually trained for it.

The following is from a CHCH Press article, and describes one of two scenario's. What was the second?

https://www.stuff.co.nz/national/123670066/unprepared-how-the-spies-and-cops-entirely-missed-the-terrorist

"On October 2018, staff from the New Zealand Security Intelligence Service (SIS) and the New Zealand Police gathered to test two hypothetical counter-terrorism scenarios.

One scenario involved a vehicle hitting pedestrians leaving the Masjid an-Nur in Deans Ave, Christchurch. The hypothetical attacker shouted anti-immigration and Islamophobic slurs as he fled the scene.

The planning session, as outlined in the report of the Royal Commission of inquiry into the terrorist attack on Christchurch masjidain on March 15, 2019, suggests both agencies had carefully identified a threat and were working on a response. It suggests their efforts to thwart Right-wing extremists were in place and on the ball."