From the Telegraph's site,
'The man, who identified himself as 28-year-old Australian-born Brenton Tarrant filmed the attack on social media. Dressed in a military-style, camouflage outfit, and carrying an automatic rifle he started randomly shooting people in the Al Noor mosque shortly after 1.40pm local time (12.40am GMT).
Tarrant, who filmed himself attacking a Christchurch mosque in a Facebook Live video, posted a 74-page manifesto in which he claims to be from a “working class, low income family”.
He said he was of Scottish, Irish and English stock and moved to New Zealand temporarily to plan and train and then stayed there after deciding to conduct the attack.
“I have read the writings of Dylann Roof and many others, but only really took true inspiration from Knight Justiciar Breivik,” he wrote.'