The white supremacist accused of killing 51 people at two mosques in Christchurch, New Zealand, currently has no access to internet, TV, newspapers, and radio. Yet he’s still able to get his hateful ideology out into the world, all thanks to extremists on 4Chan and lax rules about letter writing in New Zealand prisons.

Brenton Tarrant, the 28-year-old Australian national who allegedly broadcast his mass murder on Facebook Live earlier this year, wrote a six-page letter that was published to 4Chan’s /pol/ message board yesterday. The letter, dated July 4, 2019, was addressed to someone in Russia named Alan, and referred to a “great conflict on the horizon” as well as “a great amount of bloodshed” that he predicted for the future. Tarrant has pleaded not guilty to 51 counts of murder, 40 counts of attempted murder, and one count of terrorism.

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In the letter, which appears to be a response to a letter first sent by “Alan,” Tarrant praises Russia, saying he last visited the country in 2015 and encourages Alan to find his Facebook photos from St. Petersburg and Moscow. Tarrant notes that Facebook has taken down his account but claims there are still archived versions floating around the internet.

Tarrant also goes into his political views, citing Plato’s The Republic, Richard Dawkins’s “idea of cultural evolution by memetics,” and Carl G. Jung’s “views on inherited racial conscious [sic].” He also cites Oswald Mosley, a British fascist who founded the Blackshirts in England during the 1930s and supported Adolf Hitler. Mosley is an incredibly popular figure on the far right, especially in the U.S. and Australia.

“I cannot go into any great detail about regrets or feeling as the guards will confiscate my letter if I do (to use as evidence),” Tarrant writes. “But I can tell you I have no concern about myself and I only worry for Europe’s future.”

“Europe’s future,” is likely a reference to immigration by anyone who isn’t white. Tarrant’s manifesto, which is now banned from distribution in New Zealand, explicitly referred to immigration, made numerous references to internet culture, and called President Donald Trump a, “symbol of renewed white identity.”

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Tarrant’s letter ends by referring to a “duty to your people,” which presumably is a reference to white people.