Norwegians are mourning the victims of a massacre at an island youth camp and a bombing in the capital Oslo.
At least 85 people died when a gunman opened fire at the Utoeya camp on Friday, hours after a blast in the government quarter killed seven. Another four are missing on the island.
A 32-year-old Norwegian man was charged over both attacks, but police say it is possible another person was involved.
The suspect surrendered when approached by police officers, they said.
Police chief Sveinung Sponheim said they took 45 minutes to reach the island, and the gunman was apprehended 45 minutes after that.
Mr Sponheim added that there were still bodies or body parts in buildings damaged by the Oslo blast, which he confirmed was caused by a car bomb.
However, the buildings were currently too fragile and dangerous to search, and there were still undetonated explosives there, the police chief said.
It was possible the total death toll from the two attacks could rise to 98, he said.
Prime Minister Jens Stoltenberg comforted victims and relatives alongside King Harald, Queen Sonja and Crown Prince Haakon in the town of Sundvollen near the island.
Mr Stoltenberg said he was "deeply touched" by the meetings.
"We will do whatever we can to give them as much support as possible," he said.