Survivors of Sweden's worst mass shooting on Wednesday recalled trying to save the lives of their comrades at a school for adults in Örebro, a day after a gunman killed 11 people on what the prime minister called a "dark day" in the country's history.

The death toll has risen to 11 following the shooting on Feb. 4 in Örebro, while police said the number of injured is still unclear

Sweden’s prime minister said the attack at the Risbergska School was the worst mass shooting in country’s history