Police said at least 10 people were killed at a school on Tuesday, in what has been described as the worst mass shooting in Sweden’s history. The suspected perpetrator also died. A large number of people were injured after a gunman opened fire at a campus in the city of Örebro in central Sweden,

At least 11 people died, including the gunman, and at least five were seriously wounded in a shooting at an adult education center west of Stockholm.

Officials in Sweden have vowed to determine why a man killed 10 people, and apparently himself, in an unprecedented attack that's shaken their "society to its core."