SUNDVOLLEN: A suspected right-wing fanatic accused of killing at least 92 people deemed his acts "atrocious" yet "necessary" as Norway mourned victims of the nation's worst attacks since World War Two.
Police were hunting on Sunday to see if a possible second gunman took part in the shooting massacre and bomb attack on Friday that traumatised a normally peaceful Nordic country.
In his first comment via a lawyer since he was arrested, 32-year-old Norwegian Anders Behring Breivik expressed willingness to explain himself in court at a hearing likely to be held on Monday about extending protective custody.
"He has said that he believed the actions were atrocious, but that in his head they were necessary," lawyer Geir Lippestad told independent TV2 news.
Police said Breivik gave himself up after admitting to a massacre in which at least 85 people died, mostly young people attending a summer camp of the youth wing of Norway's ruling Labour Party on an idyllic island.
Breivik was also arrested for the bombing of Oslo's government district that killed seven people hours earlier. Norway's toughest sentence is 21 years in jail.
Survivors, relatives of those killed and supporters planned a procession to mourn the dead at Sundvollen on Sunday, near the island where the massacre took place.
Police said they were seeking several missing people and the toll could rise to 98, in the worst case.
Lippestad, speaking late on Saturday, did not give more details of possible motives by Breivik.
Breivik hated "cultural marxists", wanted a "crusade" against the spread of Islam and liked guns and weightlifting, web postings, acquaintances and officials said.
A video posted to the YouTube website showed several pictures of Breivik, including one of him in a Navy Seal type scuba diving outfit pointing an automatic weapon.
"Before we can start our crusade we must do our duty by decimating cultural marxism," said a caption under the video called "Knights Templar 2083" on the YouTube website, which took down the video on Saturday.
A Norwegian website provided a link to a 1,500 page electronic manifesto which says Breivik was the author. It was not possible to verify who posted the video or wrote the book.
"Once you decide to strike, it is better to kill too many than not enough, or you risk reducing the desired ideological impact of the strike," the book said.
Norway has traditionally been open to immigration, which has been criticised by the Progress Party, of which Breivik was for a short time a member. The Labour Party, whose youth camp Breivik attacked, has long been in favour of immigration.
About 100 people stood solemnly early on Sunday at a makeshift vigil near Oslo's main church, laying flowers and lighting candles. Soldiers with guns and wearing bullet-proof vests blocked streets leading to the government district.
"We are all in sorrow, everybody is scared," said Imran Shah, a Norwegian taxi driver of Pakistani heritage, as a light summer drizzle fell on unusually empty Oslo streets.
"At first, people thought Muslims were behind this," he said of some initial suspicions that the attacks might have been by Al Qaeda perhaps in protest at NATO-member Norway's role in Afghanistan or Iraq.
Some terrified survivors of the shooting rampage said bullets came from at least two sides.
"We are not at all certain" about whether he acted alone, police chief Sveinung Sponheim said. "That is one of the things that the investigation will concentrate on."
Police took almost 1.5 hours to stop the massacre, the worst by a single gunman in modern times. "The response time from when we got the message was quick. There were problems with transport out to the island," he said, defending the delay.
Witnesses said the gunman, wearing a police uniform, was able to shoot unchallenged for a prolonged period. He picked off his victims on Utoeya Island northwest of Oslo forcing youngsters to scatter in panic or to jump into the lake to swim for the mainland.
"I heard screams. I heard people begging for their lives and I heard shots. He just blew them away," Labour Party youth member Erik Kursetgjerde, 18, told Reuters.
"I was certain I was going to die," he said. "People ran everywhere. They panicked and climbed into trees. People got trampled."
The bloodbath was believed to be the deadliest attack by a lone gunman anywhere in modern times.
The suspect, tall and blond, owned an organic farming company called Breivik Geofarm, which a supply firm said he had used to buy fertiliser -- possibly to make the Oslo bomb.
Home-grown anti-government militants have struck elsewhere in the past, notably in the United States, where Timothy McVeigh killed 168 people with a truck bomb in Oklahoma City in 1995.
The district attacked is the heart of power in Norway. But security is not tight in a country unused to such violence and better known for awarding the Nobel Peace Prize and mediating in conflicts, including the Middle East and Sri Lanka.
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