BBC writes that the research about the massacre in New Zealand's Christchurch 2019., had many omissions, they have concluded that it was not possible to stop it.
(The New York Times)
After the white supremacist Brenton Tarrant has killed 51 persons in two mosques the investigation started.
He had many time to get enough weapons because government was to much focus on Islamist terrorism study to not see what is happening, writes BBC.
The conclusion of the investigation is, even if the police has known that Tarrant will do something like this, still he would be able to do the same.
"Commission has not identified omissions of government agencies which would be able to made a terroristic plan and discovered a plan for the attack," said Jacinda Andersen the prime minister of New Zealand, and added that after this many lessons have been made, for something like this never happen again.