The man accused of the Christchurch mosque killings is banned from sending or receiving mail in prison until tighter controls are in place.
The Corrections Department has apologised to victims for allowing him to send a six-page handwritten letter to a supporter in Russia. The letter was then posted on 4chan, a website popular with the alt-right.
Prime Minister Jacinda Ardern has expressed her disappointment, saying the accused should not have been allowed to spread his hateful message to the world - and most New Zealanders will feel the same way.
Corrections Minister Kelvin Davis spoke to Susie Ferguson on Morning Report, and told her the accused has written nine letters. Seven had been sent, and two had been withheld.
Two of the letters were to his mother, but Mr Davis couldn't say who the others were sent to.