OSLO, August 22 - RAPSI. Anders Behring Breivik, who has been accused of terrorism in Norway, is writing an autobiography and plans to describe two branches of the organization, of which he claims to be a member, his attorney said.

Breivik, 33, has confessed to murdering 69 people at a youth summer camp on Utoya Island and eight in a central Oslo bombing on July 22, 2011. However, he pleaded innocent to terrorism charges. He claimed that he was on a crusade against multi-culturalism and the "Muslim invasion" of Europe when he carried out the attacks.

The court is expected to pass a sentence in the case on Friday.

It was earlier reported that Breivik is writing three books in prison - the first is devoted to the terror act, the second to ideological issues, and the third to his future.

Breivik's attorney said his client has called the book devoted to the terror act an autobiography.