Norway mass killer wants time in court.

Anders Behring Breivik wants to tell Norway and the world why he killed at least 93 people in a bomb attack and shooting rampage when he appears in court on Monday, his lawyer said.

Calling himself a crusader against a tide of Islam in a rambling 1,500-page online manifesto, the 32-year-old mass murderer wants the opportunity to explain actions he deemed 'atrocious, but necessary'.

Lawyer Geir Lippestad said his client had admitted to Friday's shootings at a Labour youth camp and an earlier bomb that killed seven people in Oslo's government district, but that he denies any criminal guilt.