Anders Behring Breivik is serving Norway's longest sentence, 21 years, for killing 77 people in 2011
Norwegian mass killer Anders Behring Breivik has sued the state for violating his human rights by keeping him in "extreme" isolation, his lawyer, Oeystein Storrvik, told Reuters on Friday.
"He's suing the state because he has been in an extreme isolation for 11 years, and has no contacts wit