OSLO/UTVIKA - Norwegian mass killer Anders Behring Breivik will remain in solitary confinement for the next four weeks, a judge ordered on Friday.
Breivik has admitted killing 77 people on July 22 -- eight in a bombing in Oslo that destroyed the Norwegian government's headquarters, and 69 gunned down on a nearby island.
"The accused describes his isolation as boring and monotonous and as a sadistic method of torture," judge Hugo Abelseth told a news conference at the Oslo court house.
He said Breivik, 32, would stay isolated in prison until Sept. 19 because of concerns that evidence could be tampered with. Police have not ruled out the possibility of accomplices to the crime.