Anders Behring Breivik, who confessed to carrying out a bombing and shooting spree that left 93 people dead in Norway, will be held in complete isolation for four weeks after a hearing in which he said his terror network had two other cells.
Breivik pleaded not guilty to one of the deadliest modern mass killings in peacetime, saying he wanted to save Europe and send a strong signal, not to kill as many as possible, Judge Kim Heger said after a closed court hearing.
Breivik could tamper with evidence if released, and will be held for at least another month after the court-ordered solitary confinement, the judge explained.
His claim that there are two additional cells still in the wind runs counter to previous media reports that he acted alone, but has sent Norway's security services into an investigative frenzy.
Breivik made clear in an Internet manifesto that he planned to turn his court appearance into theater, preparing a speech for his appearance in court even before launching the attacks, then requesting requested an open hearing in which he would wear a uniform.
The suspect staged the bombing and youth camp rampage as "marketing" for his manifesto calling for a revolution that would rid Europe of Muslims, Breivik said.
Anti-semites in Norway have tried to blame Breivik's attack on the Mossad due to his praise for the prominent zionist Theador Herzl.
Norway has been stunned by the bombing in downtown Oslo and the shooting massacre at a youth camp outside the capital, which the suspect said were intended to start a revolution to inspire Norwegians to retake their country from Muslims and other immigrants. He blames liberals for championing multiculturalism over Norway's "indigenous" culture.
"It is clear that there is concrete information that a public hearing with the suspect present could quickly lead to an extraordinary and very difficult situation in terms of the investigation and security," Heger said.
Police say 86 people were killed in the initial attack. About 90 minutes earlier, a car bomb exploded in the government district in central Oslo, killing seven.
More than 90 people were wounded, and others remain missing at both crime scenes.
Breivik laid out his extreme nationalist philosophy as well as his attack methods in a 1,500-page manifesto. It also describes how he bought armor, guns, tons of fertilizer and other bomb components, stashed caches of weapons and wiping his computer hard drive -- all while evading police suspicion and being nice to his neighbors.