Bomb blast at Norway PM's office kills 7; gunman attacks youth camp on nearby island; 1 arrest

OSLO, Norway (AP) -- A bomb ripped open buildings in the heart of Norway's government Friday, and a man dressed as a police officer opened fire at an island youth camp connected to the ruling party. At least seven people were killed in the blast and nine more in the camp shootings, the peaceful nation's worst violence since World War II.