NEW : 90 people killed in Oslo shooting . NEW : A police spokesman says the death toll may rise on the island . 90 killed , At least 80 people hospitalized after the blast in Utoya Island . Prime Minister Jens Stoltenberg was not in his office at the time of the blast and was not hurt , officials said . The man in custody is a blond , 32-year-old Norwegian .
NEW : 90 people killed in Oslo shooting . NEW : A police spokesman says the death toll may rise on the island . 90 killed , At least 80 people hospitalized after the blast in Utoya Island . The man in custody is a blond , 32-year-old Norwegian .