Anders Behring Breivik, 32, who according to local media was arrested by police after the shooting in Utoeya, is seen in this handout photo released to Reuters on July 23, 2011.SCANPIX SWEDEN/Reuters
Norwegian police detain a young man, center, accused of carrying a knife outside a hotel where Norway's prime minister was meeting families of shooting victims in Sundvollen, Norway Saturday July 23, 2011.BJ÷RN LARSSON ROSVALL / SCANPIX
A policeman stands at the cordonned off access to the site of an explosion near government buildings in Oslo on July 22, 2011.AUDUN BRAASTAD/AFP / Getty Images
Debris is seen on the street after a powerful explosion rocked central Oslo July 22, 2011.SCANPIX NORWAY
A destroyed car and debris are seen at the site of a powerful explosion that rocked central Oslo July 22, 2011.SCANPIX NORWAY/Reuters
Firefighters and rescue workers rest after tending to victims of a bomb blast which took place outside the Norvegian Prime Minister's office in Oslo, on July 22, 2011.BERIT ROALD
Police set up a checkpoint outside the Ullevaal Hospital in Oslo, one of the hospitals where many of those injured were taken after an explosion in the centre of Oslo, Friday July 22, 2010.Hakon Mosvold Larsen/The Associated Press
An injured woman is helped by a man at the scene of a powerful explosion that rocked central Oslo July 22, 2011.SCANPIX NORWAY/Reuters
Military personnel work at the scene of a powerful explosion that rocked central Oslo July 22, 2011.SCANPIX NORWAY/Reuters
Rescue workers work at the scene of a powerful explosion that rocked central Oslo July 22, 2011.SCANPIX NORWAY/Reuters
The wreckage of a car lies outside a building in the centre of Oslo, Friday July 22, 2010, following an explosion that tore open several buildings.Thomas Winje/The Associated Press
Injured people lay on the ground at the site of an explosion near the government buildings in Norway's capital Oslo on July 22, 2011.HOLM MORTEN
A passer-by comforts an injured woman after a powerful explosion rocked central Oslo July 22, 2011.SCANPIX NORWAY/Reuters
Cloths, an umbrella, and blood are scattered on a sidewalk after a bomb blast which took place outside the Norvegian Prime Minister's office in Oslo, on July 22, 2011.BERIT ROALD
An injured man is treated at the scene after an explosion near the government buildings in Norway's capital Oslo on July 22, 2011. At least one person was killed by the powerful explosion which ripped through government and media buildings.THOMAS WINJE OIJORD
People are treated at the scene after an explosion near the government buildings in Norway's capital Oslo on July 22, 2011. At least one person was killed by the powerful explosion which ripped through government and media buildings.THOMAS WINJE OIJORD
Rescue officials tend to a wounded man after a powerful explosion rocked central Oslo July 22, 2011.SCANPIX NORWAY
A woman walks through debris in a street following an explosion in Oslo, Norway Friday July 22, 2011.Thomas Winje Aijord
Smoke rises from buildings in Oslo, Norway, at the scene of a large explosion which tore apart several buildings Friday July 22, 2011.Holm Morten
Firefighters work at the site of an explosion near government buildings in Norway's capital Oslo on July 22, 2011.ROALD BERIT
An aerial view of Olso's city centre shortly after an explosion rocked the Norwegian capital on July 22, 2011.JON BREDO OVERAAS/AFP/Getty Images
Smoke billows from a building at the site of the explosion that rocked central Oslo. The blast blew out most windows on the 17-storey building housing Stoltenberg's office, as well as nearby ministries including the oil ministry, which was on fire.Thomas Winje Oijord/Reuters
An aerial view shows Utoya Island on July 21, 2011, the day before a mass shooting at a youth retreat for Norway's ruling Labour Party. Party spokesman Per Gunnar Dahl told The Associated Press that a gunman dressed in a police uniform opened fire on the island, killing several youths.Lasse Tur/Reuters/The Associated Press
An aerial view shows people swimming in the water close to Utoya island in this still image taken from video footage on July 22, 2011, after the shooting.
A wounded woman is brought ashore opposite Utoya island (in the distance) after being rescued from a gunman who went on a killing rampage targeting participants in a Norwegian Labour Party youth organisation event on the island.SVEIN GUSTAV WILHELMSEN
A person injured in the shooting at a youth retreat on the island of Utoya is taken from a helicopter into the Ullevaal Hospital in Oslo on July 22, 2011.Hakon Mosvold Larsen/Associated Press