Norwegian far-right extremist Anders Behring Breivik, who killed 77 people in a bombing and shooting rampage in 2011, has made another application for parole after spending more than a decade behind bars.

Anders Behring Breivik, the jailed mass murderer who killed 77 in Norway's worst peacetime atrocity, told a court his attacks were "necessary" as he asked for early release on Tuesday, but a prosecutor said he remained dangerous and should not be freed.

Anders Behring Breivik, the Norwegian mass murderer behind the country's worst peacetime atrocity, will appear in court on Tuesday to argue he should be released from prison after spending over 13 years behind bars.

The mass killer is being held in a two-story unit equipped with fitness room, kitchen, and TV lounge with Xbox, while parakeets fly around the complex.

Anders Behring Breivik, the Norwegian mass murderer behind the country's worst peacetime atrocity, should not be released and remains dangerous, a prosecutor said, as Breivik appeared in court on Tuesday seeking release after over 13 years in prison.

A new court hearing began in Norway on Tuesday regarding the prison term of convicted mass murderer Anders Behring Breivik, 13 years after the far-right terrorist attacks in Oslo and on the island of Utøya which left 77 people dead.