15 Biggest Mass Shootings in The World

4. 2011 Norway Attacks

Deaths: 77

On July 22, 2011, a lone wolf terrorist, Anders Breivik, carried out two sequential attacks. The first attack was a car bomb that was placed in the executive government quarter of Oslo. The car bomb exploded, killing eight people and injuring 209 others. A couple of hours later, Breivik took a ferry to the island of Utøya, where a summer camp was organized by the youth division of the Norwegian Labour Party. Breivik opened fire on participants, killing 68 and injuring 110; two days later one of the victims died at the hospital, raising the death toll from the shooting to 69.

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