Police have lowered the death toll at the youth camp to 68, down from 86. A police spokesman said that higher, erroneous figure emerged as police and rescuers were focusing on helping survivors and securing the area.
Authorities also said the death toll in the bomb blast in Oslo before the shootings had gone up to eight, from seven. That puts the total number of people confirmed killed in the twin attacks at 76, down from 93.
In court Monday, a judge rejected Breivik's request to an open hearing to explain the massacre to the public. Breivik's attorney also said the 32 year old wanted to appear in court in some sort of uniform.
The terror suspect argues that he acted to save Europe from Muslim immigration.
"According to what the court understands, the accused believes that he needed to carry out these acts in order to save Norway and Western Europe from, among other things, cultural Marxism and Muslim takeover," Judge Kim Heger said.
Heger ruled during the closed arraignment that the terror suspect will be held in complete isolation for four weeks. Breivik could tamper with evidence if released, and will be held for at least another month after the court-ordered solitary confinement, the judge said.
Prosecutor Christian Hatlo told reporters that Breivik was very calm and "seemed unaffected by what has happened." He said Breivik told investigators during his interrogation that he never expected to be released and that he expects to spend the rest of his life in prison.
Shortly before the attacks, Breivik posted a 1,500-page manifesto on the Internet calling for a Christian war to defend Europe against the threat of multiculturalism and Muslim domination. Part of it was taken from the Anti-Technology Manifesto written by the "Unabomber" Ted Kaczynski.
New details into camp shooting
More details have been released about the youth camp shooting on Utoya Island. Photos have been released showing teens at the camp barricaded in a cabin with mattresses against the door. Just outside, Breivik dressed as a cop, killing at will.
"He was ice cold, he was going around killing people like it was no big deal," said witness Erik Kursetgjerdg.
The attack went on for more than an hour. 700 people, mostly teens, were attending a camp for the nation's aspiring politicians. Some tried to swim to safety only to be shot in the water. Kids hiding by the shoreline were shot point blank.
"He came, approached me, I could hear his breathing," shooting survivor Adrian Pracon said. "I could also feel his boots very near me and I could also feel the warmth from the barrel when he pulled the trigger."
Pracon survived by playing dead, but not all were so lucky. A photo captures a horrifying moment from a TV helicopter, showing the shooter taking aim as a victim seemingly pleads for mercy.
"He yelled I'm going to kill you all," Pracon said. "And he was very accurate on where he was shooting."
Norway's royal court says that one of those killed on the island was the stepbrother of the crown princess. Norway held a moment of silence Monday morning for the victims.
The search also continues for more possible victims in Friday's terror attacks. In addition to those killed, 96 others were wounded. At least four people have not been accounted for around Utoya Island.
It has also been reported that police took 90 minutes to arrive at the island from the first shot, and people who called emergency services have reported being told by operators to stay off the lines unless they're calling about the Oslo bombings.
Investigators say they need to keep searching the waters nearby for victims who may have drowned trying to escape the shooter. Authorities have not released the names of any of the victims.
Family ties: suspect's Los Angeles connection
Authorities say according to Breivik, his sister lives in West Los Angeles. He wrote about being invited to visit his sister and her family in his manifesto.
"She only wants financial security to live a life without worry and to be able to do what she wants when she wants. I used to be just like that so I know where she and millions of other Europeans are coming from. The only problem when everyone chooses this path is that we don't have any idealists left who actually cares about the greater good and the protection of our liberties."
Meanwhile, French police searched Breivik's father's house in southern France. In an interview with a Swedish tabloid, the suspect's father said he was ashamed and disgusted by his son's acts and wished he had committed suicide.
"I don't feel like his father," said former diplomat Jens David Breivik. "How could he just stand there and kill so many innocent people and just seem to think that what he did was OK? He should have taken his own life too. That's what he should have done."
Breivik's father said he first learned the news of his son's attacks from media websites.
"I couldn't believe my eyes," he said. "It was totally paralyzing and I couldn't really understand it. I will have to live with this shame for the rest of my life. People will always link me with him."
Jens David Breivik said he had severed all contact with his son in 1995 when the latter was 16.
CSU Long Beach professor's controversial opinion on Breivik
Over the weekend, Kevin MacDonald, a professor at California State University at Long Beach wrote an opinion piece about Breivik saying, "In general, it must be said that he is a serious political thinker with a great many insights and some good practical ideas on strategy."
MacDonald has received death threats. One of them on his voicemail says he should be butchered like a pig.
His opinion piece also upset community activist Earl Ofari Hutchnison of the Los Angeles Urban Policy Roundtable.
"So you say that mass murder is an example of good practical strategy…of good, clear political thinking? I have a question. What does that say about you, Mr. Professor?" Hutchinson said.
MacDonald said to say Breivik is intelligent is not the same as saying he's a nice person.
Norwegian-Americans react to the attack
Over the weekend, local Norwegians in Southern California gathered to pray for the victims of the bombing and massacre.
"On Facebook she updated a status that said she had to go across bodies, she was running for her life, and she had to go into the water to get safe, then she was picked up by a boat," said Bjoern Olsen of a loved one.
"We all feel so sad for our fellow Norwegians in Norway and their families and friends of people that have lost their loved ones," said Rigmor Duesund. "It is very emotional and a very sad day."
The Associated Press contributed to this story.