Eleven people are dead after a rampaging gunman opened fire at an adult education centre in central Sweden, in what has been dubbed the country’s worst ever mass shooting.Armed police were scrambled to Risbergska School,

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."

At least 11 people are known to have been killed in a mass shooting at the Campus Risbergska, in Sweden, and students at the school have told of the horror of seeing people shot