BBC
Norway has been hit by twin attacks - a massive bomb blast in the
capital and a shooting attack on young people at a governing Labour
Party youth camp.
At least seven people were killed in the bombing, which inflicted huge damage on government buildings in Oslo.
At least 10 more died at the camp, on an island outside Oslo, police say. One witness said he had seen 20 bodies.
The suspected gunman was arrested at the camp and the government have confirmed that he is Norwegian.
Police have said that he is also linked with the bomb attack. Reports described him as tall and blond.
Prime
Minister Jens Stoltenberg, whose Oslo offices were among those damaged
by the bomb, described the attacks as "bloody and cowardly" in a news
conference.
He said that Norway had been "shaken by evil" but that Norwegian democracy and ideals would not be destroyed.
"We are a small nation and a proud nation. No-one will bomb us to silence no-one will shoot us to silence," he said.
Norwegian media reports said the shootings at the island, on the Tyrifjorden lake, were carried out by a man in police uniform.
Several
people from the island camp are still missing, government officials
said. Police also confirmed that undetonated explosives were found on
the island.
No group has said it carried out the attacks