Thu, 28 Jul 2011 16:00:02 +0200 (Reuters) - Police Chief of Staff Johan Fredriksen (L) and police lawyer Paal Fredrik Hjort Kraby attend a news conference in Oslo July 28, 2011. Norwegian police on Thursday ended a six-day search for bodies on the island where anti-Islamist extremist Anders Behring Breivik killed 68 people and say they are increasingly certain he acted alone. Breivik, 32, killed a total of 76 people last Friday in a bomb attack in central Oslo followed by the shooting rampage at the island summer camp for the ruling Labour Party's youth wing. REUTERS/Morten Holm/Scanpix (NORWAY) NORWAY OUT. NO COMMERCIAL OR EDITORIAL SALES IN NORWAY (CRIME LAW CIVIL UNREST) NORWAY OUT. NO COMMERCIAL OR EDITORIAL SALES IN NORWAY. NO COMMERCIAL SALES