Judge Wenche Elizabeth Arntzen announced Monday the end of the first trial day for right-wing extremist Anders Behring Breivik, who killed 77 people in twin attacks in Norway last July.
After hearing Breivik's plea of "not guilty" and opening remarks by the prosecution, the defence and lawyers of the victims, the judge said the trial would adjourn until Tuesday, when Breivik will start testifying.
Breivik killed eight people on July 22 when he set off a bomb in a van parked at the foot of government buildings in Oslo housing the offices of Labour Prime Minister Jens Stoltenberg, who was not present at the time.
He then travelled to Utoeya island outside Oslo where dressed as a police officer, he spent more than an hour shooting at hundreds of people attending a ruling Labour Party youth summer camp.
The shooting spree claimed 69 lives.
Breivik has previously described his actions as a "cruel but necessary" act of self-defence against those he considered to be "state traitors" for opening Norway up to multiculturalism and allowing the "Muslim invasion" of Europe.