The man responsible for the massacre in Norway was a member of a Swedish nazi forum which encourages attacks on government buildings.
It was also revealed by local police that he had extreme right wing views who hated Muslims.
According to Swedish website Expo Anders Behring Breivik is a member of 'Nordisk' which has 22,000 members and focuses on political terrorism.But then, shortly after the massacre and bombing initially occurred, we have this statement:
A terror group, Ansar al-Jihad al-Alami (the Helpers of the Global Jihad), issued a statement claiming responsibility for the attack, according to Will McCants, a terrorism analyst at CNA, a research institute that studies terrorism. The message said the attack was a response to Norwegian forces’ presence in Afghanistan and to unspecified insults to the Prophet Muhammad. “We have warned since the Stockholm raid of more operations,” the group said, apparently referred to a bombing in Sweden in December 2010, according to Mr McCants’ translation. “What you see is only the beginning, and there is more to come.” The claim could not be confirmed.