At least 80 people died when a gunman opened fire at an island youth camp in Norway, hours after a bomb attack on the capital, Oslo, police say.

Oslo police are questioning a 32-year-old Norwegian man in connection with Friday’s attacks.

The man was arrested on tiny Utoeya island outside Oslo, where police say he opened fire on teenagers.

Earlier, the number of dead from the island shooting spree, which is among the world’s most deadly, was put at 10. . .