Heard he was Somali?
Sad news either way, too soon to speculate.
I think ESB is getting at the issue of BBC saying Norwegian in headline so if you didn't look any deeper you wouldn't know he was a Somali who has been given Norwegian citizenship, (NB Sky does same).. The Guardian says 'suspect & victims nationalities known and in the text they say
The suspect
A 19-year-old Norwegian-Somali man was arrested at the scene after being Tasered by a police officer.
Actually I don't know the guy was born in Somalia, I'm assuming that as the most likely case.