The Facebook account that posted the video was no longer available shortly after the shooting. In a lengthy manifesto published online the supposed shooter outlined who he was and why he carried out the massacre at the Christchurch mosque, NZ Herald reported. Inside the mosque, the gunman's footage showed distinctively patterned green carpet that also matched images tagged on Google Maps as being at the same location.ĭistinctive writing on the gunman's weapons seen in the footage also matched images posted on a Twitter account using the same name and cartoon profile picture as the Facebook Live video. This included the entrance of the mosque, which has a number of distinct features such as a fence, postbox and doorway. The 17-minute video ended as the gunman drove away from the scene at speed.Īgence France-Presse confirmed the video was genuine through a digital investigation that included matching screenshots of the mosque taken from the gunman's footage with multiple images available online showing the same areas. He then re-entered the mosque to check for survivors.