Norwegian Prime Minister Jens Stoltenberg said Saturday the twin attacks in the Nordic country that killed at least 91 people were "a national tragedy."
Stoltenberg told reporters that not since the World War II had his country seen a greater crime, Xinhua reported.
Police confirmed Saturday the death toll rose to 84 in the shooting spree Friday at a youth camp on the island of Utoeya, some 40 km west of the capital of Oslo. The shootings on the island followed a bombing in Oslo that killed seven.
But the Norwegian government has not changed its threat level. Justice Minister Knut Storberget said the debate on the threat level was ongoing.
A gunman wearing police uniform and police identification landed on the small island, shooting people at a youth camp two hours after the deadly bomb explosion rocked the government building quarters in the Norwegian capital city.