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By Alastair Jamieson

Right-wing mass killer Anders Behring Breivik won a partial victory Wednesday after a court ruled his human rights have been violated during his imprisonment for terrorism and murder.

The court in Oslo said his prison conditions breached an article in the European Convention on Human Rights (ECHR) prohibiting inhuman and degrading treatment.

However, it court dismissed Breivik's claim that the government had also violated his right to respect for private and family life.

Anders Breivik made a Nazi gesture during last month's court appearance.Lise Aserud / AP

Breivik was convicted of terrorism and mass murder for 2011 bomb and gun attacks in Norway that killed 77 people.

He claims his prison conditions violate the ECHR. At court hearings last month, he complained that prison authorities won't let him communicate with or receive visits from other right-wing extremists.

Related: Norwegian Mass Murderer Accepted to Oslo University

Government lawyers argued Breivik remains a dangerous inmate who could inspire others to commit similar attacks.

The Associated Press contributed.