A Norwegian prosecutor says the indictment against the right-wing extremist who confessed to a bombing and shooting massacre in July will be ready on Friday.

Prosecutor Tor-Aksel Busch said Tuesday the indictment against Anders Behring Breivik won't be made public until everyone mentioned in it _ including survivors of the attacks and relatives of the 77 people killed _ have had a chance to see it.

"That could take until the end of next week," Busch told The Associated Press.

For the last seven months Breivik, 32, has been held on preliminary terror charges, which are not expected to undergo changes in the indictment.

Breivik has confessed to the attacks _ bombing government buildings in Oslo and shooting dead 69 people, mainly youths, at a Labor Party youth camp on Utoeya island _ but denies criminal responsibility.

If convicted, he could be sentenced to 21 years in prison or psychiatric care if he's deemed mentally ill.

However, a sentence could be prolonged indefinitely if Breivik, who would be 53-years-old after serving a maximum 21-year prison term, is considered a danger to society.

Two court-appointed psychiatrists who examined Breivik concluded that he was psychotic and paranoid schizophrenic, and therefore unaccountable for his crimes.

But a public outcry following that diagnosis forced the court to appoint two more psychiatrists who are currently examining Breivik.

The trial is slated to start on April 16 and could last about 10 weeks.