Norway shooting at a youth camp

Large explosions have rocked the capital of Norway around 3pm today.
They are assumed to be terrorist attacks, though no group has yet claimed responsibility.
The reports are firm enough now to suggest that there has been a second attack in Norway, a shooting at a youth camp of the ruling Labour Party. Details remain sketchy. State TV says 5 injured, according to Reuters. Other accounts say a man wearing a police uniform opened fire at the camp. It's not clear that this incident is even over yet. Ongoing coverage here.
OSLO, Norway - A man dressed in a police uniform opened fire at a youth camp sponsored by the ruling Labor Party, today with perhaps five people wounded - shortly after a bomb exploded at the offices of the prime ministerPolice told broadcaster NRK that an arrest has been made on Utoya, an island in Tyrifjorden, about an hour's drive from Oslo. There has also been a shooting at a summer camp run by the Labor Party in Utøya. Reports right now say that four people may be dead. Norway's former prime minister was scheduled to speak at the camp today.Norway Labor Party spokesman tells AP several people shot at youth camp outside Oslo