Norway's public broadcaster has released video showing convicted mass murderer Anders Breivik setting off a bomb that killed eight people in Oslo in 2011.
The footage from video surveillance cameras shows Breivik parking a white van outside a government building that housed the prime minister's offices.
He is seen getting out of the car in a security guard's uniform and walking away, before a massive explosion.
Breivik killed 77 people in the bombing and a deadly rampage on the island of Utoeya.
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