Oslo, Norway (CNN) -- Norway mass killer Anders Breivik should be considered sane and acquitted for the attacks that left 77 people dead, his lawyer said in closing arguments Friday. Breivik has admitted carrying out the July 22 attack on a Labour Party youth camp on Utoya Island that killed 69 people and a bombing targeting government workers in Oslo that killed eight. But Breivik, who boasts of being an ultranationalist who killed his victims to fight multiculturalism in Norway, says he acted out of "necessity." Defense lawyer Geir Lippestad argued that Breivik should be fully acquitted on the charges of voluntary homicide and committing acts of terror in Norway -- and that this should be on the grounds of necessity, not insanity.
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The trial ends, and judges say the verdict will be delivered on August 24
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A survivor says he is relieved Breivik's trial has been "dignified, thorough, proper"
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As Anders Breivik addresses the court, relatives of some of the 77 victims walk out in protest
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Prosecutors say they believe he is mentally ill and should be transferred to a mental institution
Giving his closing arguments Friday, @placeholder sought to argue that his client's past did not point to a history of violent acts but rather to political activism.