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A Norwegian flag stands amid flowers July 24, 2011 in Oslo, as Norwegians pay tribute to the victims of a bomb explosion which ripped through government buildings and the shooting spree at the youth camp of the Norwegian Labour Party, two days ago. The suspect in Norway's twin attacks that killed dozens says he acted alone, police said, in a "cruel" but "necessary" slaughter planned over many months. As Norway's king and prime minister joined mourners in the cathedral, police said they are still trying to establish whether there was "one or several" shooters in the attack on Utoeya island, northwest of Oslo.
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A survivor (left) of the Utoya island shooting at the Norwegian Labour Party youth summer camp is reunited with her parents at Sundvolden, some 40 kilometers southwest of Oslo, July 23, 2011. Dozens of young people were killed or wounded in Friday's shooting spree on the island just outside the capital - and the figure could rise, a senior police officer said.
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Utoya is seen in the background as people light candles on July 23, 2011 in memory of the victims of Friday's shooting spree on the island.
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People in Oslo crowd around a flower tribute to the victims of a bomb explosion which ripped through government buildings and the shooting spree at the youth camp of the Norwegian Labour Party, Sunday, July 24, 2011.
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A young boy carry roses during a gathering on July 24, 2011 in Oslo.
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Families and friends grieve as they gather for a sombre mass at Oslo Cathedral on Sunday in memory of the victims of Friday's twin attacks.
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Tributes are left at Smmerapen Norderhov church during a memorial service following Friday's twin terror attacks, on July 24, 2011 in Oslo, Norway.
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Norwegian Prime Minister Jens Stoltenberg speaks during a memorial service at Oslo Cathedral Sunday.
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Candles are lit as people gather outside the Oslo Cathedral to mourn and show their respect for the victims of the July 22 shooting at a Norwegian Labour Youth League camp, July 23, 2011.
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Candles are lit as people gather outside the Oslo Cathedral to mourn and show their respect for the victims of the July 22 shooting at a Norwegian Labour Youth League camp, July 23, 2011.
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Norwegian Crown Prince Haakon and Prince Sverre Magnus are pictured during a candlelighting ceremony at Oslo Cathedral, July 23, 2011.
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People gather outside the Oslo Cathedral to mourn and show their respect for the victims of the July 22 shooting at a Norwegian Labour Youth League camp.
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Bente Ryan (left) of Norway and her husband Jeff light candles during a memorial service for the victims of the Oslo massacres at the Norwegian Seaman's Church in Sydney, Australia, July 24, 2011.
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A woman lays flowers at Norway's embassy in Berlin, July 23, 2011.
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Three young women stand in front of flowers in front of the Norwegian embassy in Stockholm, Sweden, July 23, 2011.
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A search for missing children continues off Utoya Island following Friday's attacks, July 24, 2011 in Utoya, Norway. On Monday the death toll from the shooting on Utoya island was lowered by Norwegian police, from 86 to 68, though the search for missing continued. Police also raised the number of those killed by the bomb blast in Oslo from seven to eight, making the current death toll 76.
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A survivor of the Utoya island shooting at the Norwegian Labour Party youth summer camp is reunited with her parents at Sundvolden, some 40 kilometers southwest of Oslo, July 23, 2011.
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Rescue workers evacuate young people from the summer school meeting organized by the ruling Labour Party on Utoya, an island outside the capital, on July 23, 2011.
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A soldiers passes by a Norwegian flag flying at half-mast in front of the government headquarters building July 23, 2011, a day after a bomb exploded. Eight people died.
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Norwegian soldiers stand guard July 23, 2011, a few blocks from the government's headquarters in Oslo.
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Workers clean up a street behind a government building in Oslo on July 23, 2011 after a bomb blast hit the government headquarters on July 22. Norway's prime minister said the country would emerge stronger from the "cruel act of violence."
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A woman lights a candle during a vigil outside the Norwegian embassy in central London, July 25, 2011.
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A note of condolence rests under British and Norwegian flags amidst floral tributes outside the Norwegian Embassy, July 25, 2011 in London, England.
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Hearses transport victims' bodies away from a cordoned-off police area on the Norwegian mainland across the water from Utoya island, Monday, July 25, 2011. Police announced Monday that they had dramatically overcounted the number of people slain in a shooting spree at a political youth group's island retreat and were lowering the confirmed death toll from 86 to 68. The overall toll in the attack now stands at 76, still one of the worst modern mass murders in peacetime.
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Relatives gather to observe a minute's silence opposite Utoya Island, July 25, 2011.
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People gather outside Oslo City Hall to participate in a "rose march" in memory of the victims of Friday's bomb attack and shooting massacre Monday, July 25, 2011.
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At least 150,000 people gathered in Oslo to commemorate the victims of terror. Rallies and torchlight marches were held in other cities across the country.
At City Hall in Oslo Crown Prince Haakon told the crowd that "Tonight the streets are filled with love."
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People gather outside Oslo City Hall in memory of the victims of Friday's bomb attack and shooting massacre, Monday, July 25, 2011. Anders Behring Breivik has admitted to perpetrating the violence, but he entered a plea of not guilty, saying he wanted to save Europe from Muslim immigration and multiculturalism.
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A woman fixes a rose to a fence at the bomb site in Oslo, Norway, Monday, July 25, 2011.