Breivik murdered a total of 76 people – eight in a downtown car bombing in Oslo and 68 others at a Labour Party youth summer camp on Utoya island.
At least 250,000 people united in grief at a memorial event in Oslo on Monday evening as bereaved and injured reacted with striking calm, dignity and unity.
Prime Minister David Cameron said his newly formed National Security Council had already been asked to explore the activities of far-right groups while Scotland Yard had lent ant-terrorism officers to Europol in the Hague.
British-born Breivik – his father was a diplomat stationed at the Norwegian Embassy here in 1979 – claimed in a 1,500 page manifesto posted online shortly before he carried out the killings that his own, unique secret organisation was founded in London.
He also claimed to have extensive links – and 600 Facebook friends – to and with the far-right, anti-integrationist English Defence League.
This was strenuously denied by EDL spokesman and leader Stephen Lennon, also known as Tommy Robinson, on BBC2’s Newsnight.
Breivik, currently being kept in solitary confinement awaiting his next court appearance, faces terrorism charges and possible further indictments of crimes against humanity.
Reports suggested Breivik was on a security service watch list after he ordered chemicals online from a Polish company in March this year and his name passed to the Police Security Service (PST) by Norwegian customs and excise.
Mr Breivik’s lawyer, Geir Lippestad, at a televised live press conference held some hours before the names and identities of victims were released said: “This whole case indicates that he is insane.”
But he said it was too early to say if that would be his defence in court or he would enter such a plea. Mr Lippestad, 46, a member of the Norwegian Labour Party whose youth summer camp on Utoya was the target of Breivik’s gun attack, told reporters he would quit as Breivik’s lawyer if he did not agree to a psychological and psychiatric assessment.
“He says he is sorry he had to do this but it is necessary. He hates all the Western ideas and the values of democracy. He expects that this is the start of a war that will last 60 years. He looks upon himself as a warrior. He starts this war and takes some kind of pride in that”, said Mr Lippestad.
He said Breivik had used drugs before he carried out the killings to stay alert and told his lawyer he was surprised he had not been killed during the attacks or on his way to Monday’s court hearing.
The judge ordered the hearing should be closed for security reasons.
