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Crime & Justice • Terrorism

Anders Behring Breivik

Anders Behring Breivik is a Norwegian far-right extremist and convicted terrorist born in 1979.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Anders Behring Breivik is a Norwegian far-right extremist and convicted terrorist, born in 1979. He perpetrated the 2011 Norway attacks, killing 77 people and injuring hundreds in Oslo and on Utøya. He was convicted in 2012 and sentenced to preventive detention, with the possibility of extension.

Early life

Breivik was born in Oslo, Norway, in 1979. Publicly available sources identify him as Norwegian and later associated him with far-right extremist ideology.

2011 Norway attacks

On 22 July 2011, Breivik detonated a bomb in Oslo and later opened fire at a youth camp on Utøya. The attacks were among the deadliest in modern Norwegian history.

Trial and conviction

Breivik was charged with terrorism and murder, and a Norwegian court found him sane and criminally responsible in 2012. He received a 21-year sentence of preventive detention, which can be extended if he is considered a continuing danger.

Breivik has continued to challenge conditions of his imprisonment in court, including complaints about isolation and treatment in custody. Some claims have succeeded in part, while others have not.

Key facts

  • Breivik carried out coordinated attacks on 22 July 2011 in Oslo and Utøya.
  • The attacks killed 77 people and injured more than 300 others.
  • He targeted Norway's Labour Party and its youth wing at a summer camp on Utøya.
  • He was found legally responsible and sentenced to 21 years of preventive detention, with possible extension.
  • He has been widely described as a far-right or neo-Nazi extremist in secondary sources.
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Canadian context

The case is frequently studied in Canada in discussions of terrorism, far-right extremism, online radicalization, and criminal justice responses to mass violence.

Frequently asked questions

Who is Anders Behring Breivik?
He is a Norwegian far-right extremist and convicted terrorist who carried out the 2011 Norway attacks.
What did Breivik do in 2011?
He bombed government buildings in Oslo and later attacked a youth camp on Utøya, killing 77 people.
Was Breivik convicted?
Yes. A Norwegian court found him criminally responsible in 2012 and convicted him of terrorism and murder.
What sentence did he receive?
He received 21 years of preventive detention, which can be extended if authorities still consider him dangerous.
How many people died in the attacks?
Seventy-seven people were killed in total.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Anders_Behring_Breivik
    Supports: Basic biography, attacks, death toll, and ideological description.
  2. BBC Newshttps://www.bbc.com/news/world-europe-19365616
    Supports: Court finding of sanity and 21-year sentence.
  3. PubMed Centralhttps://pmc.ncbi.nlm.nih.gov/articles/PMC3619172/
    Supports: Trial outcome, sentencing, and forensic evaluations.
  4. BBC Newshttps://www.bbc.com/news/world-europe-14259989
    Supports: Confession to the attacks, terrorism charge, and death toll.
  5. BBC Newshttps://www.bbc.com/news/world-europe-60219876
    Supports: Later imprisonment and risk-to-society ruling.