Some information....
Utoeya, a small island about 40 kilometers west of Oslo, shooting TWO HOURS after a deadly bomb explosion rocked the government building quarters in the Norwegian capital city.
gunman in his 30s was described carrying a pistol and a rifle with ‘telescopic sight’. He started shooting a few minutes after he landed on the island known as Utoeya,
At a press conference on Friday evening, Sveinung Sponheim, deputy police chief in Oslo, said that they ‘fear there was a bomb on the island’.
http://news.xinhuanet.com/english2010/world/2011-07/23/c_131003408.htm
Thanks for the info.