There's a report at Britain's Sky News, "Norway Camp Shooting: 'As Many As 30 Dead'."
And Montse Gimferrer on Twitter links to Anders Behring Breivik on Twitter, and an identical message at a "Bild" feed.
522pm PST: Okay, more at Sky News, "Suspect Held After Twin Attack In Norway."
Also, Bruce Bawer at Pajamas Media, "Norway’s Oklahoma City, or Its 9/11?"6:55pm PST: London's Daily Mail has this, "Police dismiss initial fears Norwegian terror attacks were work of Islamist organisations." (At Memeorandum.)