The government, with support from opposition parties, immediately rushed through legislation to tighten New Zealand's gun laws.
The national team narrowly avoided being caught in the New Zealand mosque attacks of March 15 that killed 51 people.
He also discussed picking off Jews walking to synagogue, shooting police officers or attacking a church or military base, according to investigators.
It has now been revealed that the National Thowheeth Jama'ath group which carried out the Sri Lanka attacks had close links with JMI, affiliated to a similarly named group in Bangladesh.
At least 50 people were killed and dozens wounded by a lone gunman at two mosques in Christchurch on Friday in what is the country's worst modern mass shooting.