Anders Behring Breivik's deadly attacks on Norway not only disrupted a peaceful nation but have resulted in stores across Norway withdrawing two video games the suspected killer used when planning the July 22 massacre.

Coop Norge, one of Norway's major grocery store chains and its main co-op, told the Agence France-Presse that it made such a decision "out of respect" for the families of the 77 people killed in the twin massacres.

Geir Inge Stokke, the chain's director for non-food items, told AFP that this move began on July 24 "to spare people who, in one way or another, were affected by the terrorist acts."

"We don't want them to stumble upon violent video games while buying milk and bread in our stores," he told the news agency.

In his 1,500-page manifesto Breivik said he was a "World of Warcraft" and "Call of Duty - Modern Warfare" fan and that he had played those games in preparation for the killings.

About 50 products were removed from the aisles of Coop stores that carried the violent games including those Breivik was a fan of, reported AFP.

The AFP also stated that Norwegian media have reported that Platekompaniet, one of the country's leading movie-, video game- and music-selling chains also removed some games from its stores.

Breivik killed about eight people when he detonated a bomb in a government headquarters in Oslo. His murderous rampage continued when he gunned down 69 people at a Norwegian Labor Party's youth camp in Utoeya. Many teenagers had their lives snuffed out by Breivik, who confessed to the attacks.

Police said Breivik, a self-described "anti-Islam crusader," was interrogated for 10 hours on Friday.

"He explains himself well and is more than willing to talk about the events," police attorney Paal-Fredrik Hjort Kraby is reported to have said in a news conference on Saturday.

Police are still conducting their investigation into the massacre and Norway's Prime Minister Jens Stoltenberg has formed the "22 July Commission" to look into the bombing and shootings that happened.

Breivik has told his lawyer he's surprised no one stopped him after he bombed the Oslo city center, as he thought he would have been killed before reaching the island where he shot more than 60 people.

"He thought he would be killed after the bombing, after the action in the island, and he also thought he would be killed at the trial. He believes someone will kill him," Geir Lippestad, the lawyer said, according to the UK Guardian. "He was a little surprised he succeeded - in his mind succeeded... He was expecting to be stopped earlier by the police or someone else during the actual day. He was surprised that he reached the island."

The Guardian article stated that Breivik claimed he was part of an anti-Islam network that has two cells in Norway and "several" more abroad.

"He says he is sorry he had to do this but it is necessary. He looks upon himself as a warrior. And he started this war, and takes some kind of pride in that," Lippestad said. "He believes this is the start of a war that will go on for 60 years. He believes the other cells will continue the war."