The European Court of Human Rights on Thursday rejected [judgment] an appeal by Norwegian mass murderer Fjotolf Hansen, previously known as Anders Behring Breivik.

Hansen was convicted of killing 77 people and wounding 42 others at a political youth camp and was sentenced to 21 years of preventive detention.

In his appeal, he challenged the conditions of his detention, claiming that his rights under Article 3 and Article 8 of the European Convention on Human Rights had been violated. In particular, he claimed that his isolation from other prisoners was a violation of his rights.

Ultimately, the court found that his appeal was “manifestly ill-founded and must be rejected in accordance with Article 35 § 3 (a) and 4 of the Convention.”