New Zealand Prime Minister has expressed disappointment at how the alleged Christchurch gunman was able to send a letter from behind bars.
"It should not have happened," Jacinda Arden told the media in Tuvalu.
In his handwritten letter that's circulating the internet, the 28-year-old writes about his political and social views.
It's understood to be a response to a letter sent to the alleged gunman by a person named Alan who is said to live in Russia.
The gunman is accused of killing 51 people.

MS NOW, CNN and Politico to sue over White House ban
Pakistan says it killed 28 militants, Afghan Taliban and UN report 3 civilian deaths
New air traffic control failure delays flights at UK airports
Textile factory fire in southern Chinese city of Foshan kills 8
Typhoon approaches eastern Japan, prompts flood and landslide warnings