The gunman used an automatic or semi-automatic weapon.
Police confirm that undetonated bombs have been found on Utøya
Police say there was time to drive from Oslo to Utoya in time between attacks.
The gunman is alleged to have opened fire, then hunted those who ran,
Reports of fertilizer smell at bomb site gunman owned company dealing with geofarming, would explain access to explosives
Police have been given unlimited funds to find who did this, and to bring them to justice
Read more: http://www.businessinsider.com/shooting-at-kids-camp-in-norway-2011-7#ixzz1Stim9t9X
And from various reporters tweeting in Norweigh
Yes, by police I believe...