Anders Behring Breivik, the Norwegian far-right who killed 77 people in a 2011 bomb and gun attack, will try for the second time on Monday to sue the Norwegian state for allegedly violating his human rights.

Breivik, described as Norway’s worst peacetime killer, claims that his isolation since 2012 when he was taken to prison amounts to inhumane treatment according to the European Convention on Human Rights.

Breivik is being held in a two-story compound with a kitchen, dining room and TV room with an Xbox, plenty of armchairs and black-and-white pictures of the Eiffel Tower on the wall. It also has a gym with weights, a treadmill and a rowing machine, while three parrots fly around the complex. Norway’s judicial system is pro-reformation of prisoners and anti-punishment.

His lawyer, Oystein Storrvik, argues that it is impossible for Breivik, who now goes by the name Fjotolf Hansen, to have meaningful contact with anyone from the outside world, and that not allowing his client to send letters is a violation of human rights of.

On July 22, 2011, Breivik killed eight people in a bomb attack in Oslo before heading to a center-left party youth camp on the island of Utøya and dressed as a police officer shooting 69 people, mostly teenagers.

The following year, Breivik was given the maximum sentence of 21 years with a clause – rarely used in Norway’s judicial system – that he could be held indefinitely if he is still considered a danger to society.

Since then, he has shown no remorse for his attacks, which he described as a crusade against multiculturalism in Norway.