Up to 150,000 people paid homage in Oslo on Monday evening to the victims of the twin attacks that left 76 people dead. Mourners sang songs and cheered in solidarity while others placed flowers on a memorial wall next to the city hall.
Anders Behring Breivik, a 32-year-old Norwegian man, is accused of carrying out the bombing in Oslo and the shooting spree on the resort island of Utoya.
Jens Stoltenberg, the prime minister, told the crowds in Oslo that Norway would not be defeated by the tragedy.
"Evil can kill a person, but it can never defeat a whole nation," he said, to loud applause.
"With the strongest of all the world's weapons - freedom of speech and democracy - do we set the course for Norway post 22 July 2011," Stoltenberg said.