Further charges against the man were being considered, police said. Stacy Squires/Stuff The other man was released without charge. Detective Inspector Michael Ford earlier said police searched the two properties after receiving information from a member of the public regarding “concerning communications on the 4chan site”. 4chan is an anonymous online message board known to be frequented by far-right individuals. On Sunday night, a person made a series of posts on the site using a similar online name to that used by the Australian terrorist who fatally shot 51 people at two Christchurch mosques on March 15, 2019. The person said they were “originally English”, but grew up in South Africa before moving to New Zealand in 2009.