It's been all over the news here, and they have confirmed that it was an act of terrorism.
The bomb seems to have detonated too early, and the terrorists real target was probably a crowded shopping area a bit further up the street.
If he had reached his destination he would probably have killed and wounded quite a few.
He carried 6 home-made pipebombs, but only one of them was detonated, and his backpack where full of nails and more explosives
This is the first confirmed terrorist attack in the Nordic countries, and it's probably not going to be the last I'm afraid.. :?