From yesterday, but important:
NZ lawmakers seeking further gun restrictions
THIS is what red flag laws in the US are designed to accomplish.
It would also allow police to weigh other factors such as a person's mental health and even what they had been posting on social media to determine whether they were fit to own a gun.
https://www.news.com.au/world/breaking-news/new-zealand-to-introduce-gun-register/news-story/de4ec90fe1c06e6622526c11642d6ef2