A man purporting to be at the centre of today's attacks in Christchurch has posted video and documents online.
The videos are distressing and appear to be of the shooting in a mosque.
Police have confirmed to RNZ they are aware of the footage - but the source and the content of the video are unconfirmed.
Police are aware there is extremely distressing footage relating to the incident in Christchurch circulating online. We would strongly urge that the link not be shared. We are working to have any footage removed.— New Zealand Police (@nzpolice) March 15, 2019
Police commissioner Mike Bush said he had seen the social media footage and said it was "very disturbing".
"It shouldn't be in the public domain and we are doing everything we can to remove it."
RNZ will not be publishing the video or the full manifesto at this point.
RNZ is also aware of footage of armed police appearing to apprehend a person.
A decision has been made to not publish any of this material.
RNZ Checkpoint is airing from an earlier start time of 4pm to cover the incident.