(Oslo July 25, 2011) Crown Prince Haakon and HRH Mette-Marit listen to a speach. An estimated 150,000 people gathered in Oslo town centre for a vigil following Friday's twin extremist attacks ...A large vehicle bomb was detonated near the offices of Norwegian Prime Minister Jens Stoltenberg on 22 July 2011. .Another terrorist attack took place shortly afterwards, where a man killed 68 people, mainly children and youths attending a political camp at Utøya island. ..Anders Behring Breivik was arrested on the island and has admitted to carrying out both attacks..(photo:Fredrik Naumann/Felix Features)