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Norwegian right-wing extremist Anders Behring Breivik arrives on June 22, 2012 in the courtroom in Oslo on the last day of the trial. His defense is expected to call for his acquittal. Even though there is no chance Breivik will be set free, his lawyers must formally make the request since their client has pleaded not guilty, despite having confessed to carrying out the murderous twin attacks on July 22, 2011, when he first bombed a government building in Oslo, killing eight people, before going on a shooting rampage on Utoeya island, northwest of the capital, where the ruling Labor Party's youth wing was hosting a summer camp. Sixty-nine people died on the island, most of them teens. Breivik, 33, has confessed to the twin attacks but has refused to plead guilty, insisting they were 'cruel but necessary' to stop the Labor Party's 'multicultural experiment' and the 'Muslim invasion' of Norway and Europe. AFP PHOTO / DANIEL SANNUM LAUTEN (Photo credit should read DANIEL SANNUM LAUTEN/AFP/GettyImages)
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Norwegian right-wing extremist Anders Behring Breivik arrives on June 22, 2012 in the courtroom in Oslo on the last day of the trial. His defense is expected to call for his acquittal. Even though there is no chance Breivik will be set free, his lawyers must formally make the request since their client has pleaded not guilty, despite having confessed to carrying out the murderous twin attacks on July 22, 2011, when he first bombed a government building in Oslo, killing eight people, before going on a shooting rampage on Utoeya island, northwest of the capital, where the ruling Labor Party's youth wing was hosting a summer camp. Sixty-nine people died on the island, most of them teens. Breivik, 33, has confessed to the twin attacks but has refused to plead guilty, insisting they were 'cruel but necessary' to stop the Labor Party's 'multicultural experiment' and the 'Muslim invasion' of Norway and Europe. AFP PHOTO / DANIEL SANNUM LAUTEN (Photo credit should read DANIEL SANNUM LAUTEN/AFP/GettyImages)
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Story highlights

Mass killer wins part of lawsuit against Norwegian state for breaching his rights

Court rules his treatment was in breach of rules prohibiting "inhuman or degrading treatment"

Right-wing extremist killed 77 people in 2011 in Norway's deadliest attack since World War II

(CNN) —  

Norwegian mass murderer Anders Behring Breivik has won part of his lawsuit against the state over his solitary confinement in a high-security prison, a court announced Wednesday.

The Oslo district court found the 37-year-old’s treatment in prison violated Article 3 of the European Convention on Human Rights, prohibiting “inhuman or degrading treatment,” and ruled that his conditions must be eased.

The court also ordered the government to pay legal costs of 331,000 kroner ($40,600) for the right-wing extremist, who killed 77 people in a shooting rampage and bombing attack in 2011.

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Norway has the right to appeal the ruling. It has not announced whether it intends to do so.

The court dismissed Breivik’s claim that the government had violated Article 8 of the European Convention on Human Rights, which guarantees respect for “private life” and correspondence.

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The ruling outlined areas of concern in regard to the conditions of Breivik’s confinement, which, taken as a whole, constituted a breach of his rights.

These included the duration of his isolation, and inadequate consideration of the mental impact of the regime. It also said the routine nude checks Breivik had to go through were not sufficiently justified from a security perspective.

But it did not give concrete directives on how the conditions should be changed.

Breivik: Conditions ‘sadistic’

The suit was heard over four days last month inside a gymnasium at Skien prison, which was temporarily converted into a courtroom.

Appearing in public for the first time since his trial, Breivik gave testimony during the suit, alleging that his isolation in prison constituted a “sadistic” attempt by Norwegian authorities to kill him.

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Since his arrest, he has been separated from other inmates, and virtually his only visits have been with professionals, who meet with him separated behind a glass screen.

His incoming and outgoing mail is also censored to prevent him from building far-right networks and inciting sympathizers to violence.

Observers expressed concern that Breivik – who gave a Nazi salute on his first day in court – was using his court appearance as a platform to publicize his extremist ideology.

Breivik’s killing spree on July 22, 2011, was the deadliest attack in Norway since World War II. Eight people were killed when a bomb he planted detonated in Oslo before he methodically shot to death 69 young people at a Labor Party youth camp on Utoya island. He blamed the party for the rise of multiculturalism in Norway.

Bjorn Ihler, one of the survivors of the Utoya massacre, said on Twitter that the ruling was a “sign we have a working court system, respecting human rights even under extreme conditions.”

“Our best weapon in fighting extremism is humanity. The ruling in the Breivik case shows that we acknowledge the humanity of extremists too,” he wrote.

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CNN’s Tim Hume wrote and reported from London, and journalist Olav Mellingsater reported from Oslo.