Some of the deadliest recent shootings
Associated Press/File 2011
77 killed in Oslo -- July 22, 2011:
Confessed mass killer Anders Behring Breivik killed 77 in Norway in twin attacks: a bombing in downtown Oslo and a shooting massacre at a youth camp outside the capital. The self-styled anti-Muslim militant admitted both attacks.
Breivik was sentenced on Aug. 24 to 10 to 21 years in prison.
Pictured: A youth lit a candle next to the Domkirke church to pay tribute to victims of the twin attacks in central Oslo.