The defence team of Anders Behring Breivik, confessed Norwegian mass killer, has started its closing arguments on the last day of the ten-week trial.

His lawyers have used the opportunity at Oslo District Court to disagree with the prosecution's assertion that the he should be declared insane and sent to a mental institution.

Defence counsel Geir Lippestad said: "Breivik wishes to be punished for his actions - that is, to be treated as criminally sane by the court.

"If we look at the basic human rights and take into account that the defendant has a political project, to see his actions as an expression of illness is to take away a basic human right, the right to take responsibility for one's own actions."

The self-described anti-Muslim militant admits that he carried out the bombing-and-shooting attacks that killed 77 people on July 22.

During the trial two teams of psychiatrists reached opposite conclusions about Breivik's mental health.

The first team diagnosed him with paranoid schizophrenia, a serious mental illness which would rule out a prison sentence.

The second team found him legally sane, saying he suffers from a narcissistic personality disorder, but is not psychotic.

Oslo District Court will decide whether Breivik is criminally insane, and will present the final ruling next month.