The man who killed 77 people in a bomb attack and shooting spree in Norway maintains that he acted alone and stayed silent when pressed about potential associates in a 10-hour interrogation, police said.
"The questions he won't answer (concerned) people that he might have had any cooperation with, like for instance that he bought something illegal from," police prosecutor Christian Hatlo told Reuters.
He described Wednesday's questioning as "more confrontational" in tone than two previous sessions since Anders Behring Breivik's arrest.
He said Breivik, 32, told police that he was alone during the July 22 attack.
Breivik has admitted detonating a fertilizer bomb in Oslo before driving about 30 miles to Utoya island to gun down those attending a Labor Party youth camp.
"He told about his traveling abroad and about firms that he has had some connection with, and we have to check that out," said Hatlo, adding police were investigating trips by Breivik to more than 10 countries.
'Calm' demeanor
He said Breivik had not flinched from the "calm" demeanor he has exhibited since the attack.
The right-wing Norwegian wrote in a 1,500-page manifesto that he intended to spark a cultural war in Europe that would turn back Islamic immigration.
Norwegian media, quoting Breivik's court-appointed defender, Geir Lippestad, said Breivik had posed outlandish demands as a condition for saying more about like-minded "cells" he claims exist in Europe, including a television appearance and the resignation of Norway's government.
"I can confirm he has some crazy demands that you can't take seriously," said Hatlo.
He said Breivik had "struggled with isolation" while in solitary confinement in an Oslo prison and would be given a computer but with no Internet access.
"He just wants to write," said Hatlo.
Police have played down the likelihood of a network of violent extremists like Breivik, but got no further in ruling out the possibility in the latest round of questioning.
"I would say we are in the same position we were previously," said Hatlo.
Former prime minister Gro Harlem Brundtland Thursday recalled speaking with youngsters at Utoya island before leaving on a boat hours before Breivik's slaughter.
"I remember hundreds of happy and optimistic young people on that Friday," she said. "I see their young faces before me constantly."
"That day will forever stand as one of the darkest days in Norwegian history, which we'll carry with us as long as we live," she added.