Police said Friday evening that they've linked the youth camp shooting and Oslo bombing. Breivik is believed to have acted alone.
Norwegian TV2 reports that Breivik belongs to "ring-wing circles" in Oslo. Swedish news site Expressen adds that he has been known to write to right-wing forums in Norway, is a self-described nationalist and has also written a number of posts critical of Islam.
A Twitter account for Breivik has surfaced, though it only has one post, this quote from philosopher John Stuart Mill: "One person with a belief is equal to the force of 100 000 who have only interests." The tweet was posted on July 17.
On a Facebook account that Norwegian media outlets have attributed to Breivik, he describes himself as having Christian, conservative views. He says he enjoys hunting, the games World of Warcraft and Modern Warfare 2, and lives in Oslo. He also lists political analysis and stock analysis as interests.
The suspect arrested in today's bombing and shooting attacks in Oslo is 32-year-old Anders Behring Breivik, who is believed to have links to right-wing extremist and anti-immigrant (read: anti-Muslim) organizations. (source: Sky News). And now, he has a Wikipedia page. The Daily Mail has photos.
Here's what Norwegian media are reporting as his Facebook page, and Twitter account. Looks like they were both just activated within the past week, which is all very suspicious.
Aftenposten notes that he is said to be a conservative Christian and a Mason, and into hunting and bodybuilding. He owned a farming company that had access to chemicals believed to have been used for bomb-making.
According to comments attributed to him on various Norwegian right-wing/anti-immigrant forums, he was a fan of an array of white supremacist and anti-Muslim pundits—including some from the US. Assuming it's legit, all of this makes early reports that Muslims were responsible for the attacks all the more regrettable.