OSLO, Norway (AP) — Norway's prime minister says an island where 80 people were killed in a massacre was "my childhood paradise that ... was transformed into Hell."
Jens Stoltenberg told reporters Saturday that he had spent many summers on Utoya. A gunman killed dozens there Friday night, shortly after a bomb was detonated in the country's capital, Oslo.
Police have one suspect in custody. Stoltenberg said it was too early to comment on the motives behind the attacks.
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THIS IS A BREAKING NEWS UPDATE. Check back soon for further information. AP's earlier story is below.
OSLO, Norway (AP) — A Norwegian who dressed as a police officer to gun down summer campers killed at least 80 people at an island retreat, horrified police said early Saturday. It took investigators several hours to begin to realize the full scope of Friday's massacre, which followed an explosion in nearby Oslo that killed seven and that police say was set off by the same suspect.
The mass shootings are among the worst in history. With the blast outside the prime minister's office, they formed the deadliest day of terror in Western Europe since the 2004 Madrid train bombings killed 191.
Police initially said about 10 were killed at the forested camp on the island of Utoya, but some survivors said they thought the toll was much higher. Police director Oystein Maeland told reporters early Saturday they had discovered many more victims.
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"It's taken time to search the area. What we know now is that we can say that there are at least 80 killed at Utoya," Maeland said. "It goes without saying that this gives dimensions to this incident that are exceptional."
Maeland said the death toll could rise even more. He said others were severely wounded, but police didn't know how many were hurt.
The island is about 500 yards (meters) from one shore of Tyrifjorden lake, an oddly shaped body of water that is 15 miles (25 kilometers) at its longest and 8 miles (12 kilometers) at its widest.
A suspect in the shootings and the Oslo explosion was arrested. Though police did not release his name, Norwegian national broadcaster NRK identified him as 32-year-old Anders Behring Breivik and said police searched his Oslo apartment overnight. NRK and other Norwegian media posted pictures of the blond, blue-eyed Norwegian.
National police chief Sveinung Sponheim told NRK that the suspected gunman's Internet postings "suggest that he has some political traits directed toward the right, and anti-Muslim views, but whether that was a motivation for the actual act remains to be seen."
A police official said the suspect appears to have acted alone in both attacks, and that "it seems like this is not linked to any international terrorist organizations at all." The official spoke on condition of anonymity because that information had not been officially released by Norway's police.
"It seems it's not Islamic-terror related," the official said. "This seems like a madman's work."
The official said the attack "is probably more Norway's Oklahoma City than it is Norway's World Trade Center." Domestic terrorists carried out the 1995 attack on a federal building in Oklahoma City, while foreign terrorists were responsible for the Sept. 11, 2001 attacks.
The official added, however, "it's still just hours since the incident happened. And the investigation is going on with all available resources."
The motive was unknown, but both attacks were in areas connected to the left-leaning Labor Party, which leads a coalition government. The youth camp, about 20 miles (35 kilometers) northwest of Oslo, is organized by the party's youth wing, and the prime minister had been scheduled to speak there Saturday.
A 15-year-old camper named Elise said she heard gunshots, but then saw a police officer and thought she was safe. Then he started shooting people right before her eyes.
"I saw many dead people," said Elise, whose father, Vidar Myhre, didn't want her to disclose her last name. "He first shot people on the island. Afterward he started shooting people in the water."
Elise said she hid behind the same rock that the killer was standing on. "I could hear his breathing from the top of the rock," she said.
She said it was impossible to say how many minutes passed while she was waiting for him to stop.
At a hotel in the village of Sundvollen, where survivors of the shooting were taken, 21-year-old Dana Berzingi wore pants stained with blood. He said the fake police officer ordered people to come closer, then pulled weapons and ammunition from a bag and started shooting.
Several victims "had pretended as if they were dead to survive," Berzingi said. But after shooting the victims with one gun, the gunman shot them again in the head with a shotgun, he said.
"I lost several friends," said Berzingi, who used the cell phone of one of those friends to call police.
The blast in Oslo, Norway's capital and the city where the Nobel Peace Prize is awarded, left a square covered in twisted metal, shattered glass and documents expelled from surrounding buildings. Most of the windows in the 20-floor high-rise where Prime Minister Jens Stoltenberg and his administration work were shattered. Other buildings damaged house government offices and the headquarters of some of Norway's leading newspapers.
The dust-fogged scene after the blast reminded one visitor from New York of Sept. 11.
Ian Dutton, who was in a nearby hotel, said people "just covered in rubble" were walking through "a fog of debris."
"It wasn't any sort of a panic," he said, "It was really just people in disbelief and shock, especially in a such as safe and open country as Norway. You don't even think something like that is possible."
Police said the Oslo explosion was caused by "one or more" bombs.
The police official said the Oslo bombing occurred at 3:26 p.m. local time (1:26 p.m. GMT), and the camp shootings began one to two hours later. The official said the gunman used both automatic weapons and handguns, and that there was at least one unexploded device at the youth camp that a police bomb disposal team and military experts were working on disarming.
The suspect had only a minor criminal record, the official said.
Sponheim said seven people were killed by the blast in downtown Oslo, four of whom have been identified, and that nine or 10 people were seriously wounded.
Sponheim said a man was arrested in the shooting, and the suspect had been observed in Oslo before the explosion there. But he refused to confirm the suspect's identity as reported by Norwegian media.
Sponheim said the camp shooter "wore a sweater with a police sign on it. I can confirm that he wasn't a police employee and never has been."
Aerial images broadcast by Norway's TV2 showed members of a SWAT team dressed in black arriving at the island in boats and running up the dock. People who had stripped down to their underwear moved in the opposite direction, swimming away from the island toward the mainland, some using flotation devices.
Sponheim said police were still trying to get an overview of the camp shooting and could not say whether there was more than one shooter. He would not give any details about the identity or nationality of the suspect, who was being interrogated by police.
Oslo University Hospital said 12 people were admitted for treatment following the Utoya shooting, and 11 people were taken there from the explosion in Oslo. The hospital asked people to donate blood.
Prime Minister Stoltenberg, who was home when the blast occurred and was not harmed, visited wounded people at the hospital late Friday. Earlier he decried what he called "a cowardly attack on young innocent civilians."
"I have a message for those who attacked us," he said. "It's a message from all of Norway: You will not destroy our democracy and our commitment to a better world."
NRK showed video in Oslo of a blackened car lying on its side amid the debris. An AP reporter who was in the office of Norwegian news agency NTB said the building shook from the blast and all employees were evacuated. Down in the street, he saw one person with a bleeding leg being led away from the area.
An AP reporter headed to Utoya was turned away by police before reaching the lake that surrounds the island, as eight ambulances with sirens blaring entered the area. Police blocked off roads leading to the lake.
The United States, European Union, NATO and the U.K., all quickly condemned the bombing, which Britain's Foreign Secretary William Hague called "horrific" and NATO Secretary-General Anders Fogh Rasmussen deemed a "heinous act."
"It's a reminder that the entire international community has a stake in preventing this kind of terror from occurring," President Barack Obama said.
Obama extended his condolences to Norway's people and offered U.S. assistance with the investigation. He said he remembered how warmly Norwegians treated him in Oslo when he accepted the Nobel Peace Prize in 2009.
Nobel Peace Prize Chairman Thorbjorn Jagland said it appeared the camp attack "was intended to hurt young citizens who actively engage in our democratic and political society. But we must not be intimidated. We need to work for freedom and democracy every day."
A U.S. counterterrorism official said the United States knew of no links to terrorist groups and early indications were the attack was domestic. The official spoke on condition of anonymity because the investigation was being handled by Norway.
At least two Islamist extremist groups had tried to take credit for the attacks. Many intelligence analysts said they had never heard of Helpers of Global Jihad, which took initial credit. The Kurdish group Ansar al-Islam also took credit on some jihadist websites.
Norway has been grappling with a homegrown terror plot linked to al-Qaida. Two suspects are in jail awaiting charges.
Last week, a Norwegian prosecutor filed terror charges against an Iraqi-born cleric for threatening Norwegian politicians with death if he is deported from the Scandinavian country. The indictment centered on statements that Mullah Krekar — the founder of Ansar al-Islam — made to various news media, including American network NBC.
Terrorism has also been a concern in neighboring Denmark since an uproar over cartoons of the Prophet Muhammad six years ago.
Ritter reported from Stockholm. Associated Press reporters Bjoern H. Amland in Hoenefoss, Norway, Louise Nordstrom in Stockholm, Matthew Lee and Rita Foley in Washington, Paisley Dodds in London, and Paul Schemm in Tripoli, Libya, contributed to this report.