A teacher has spoken of her horror after a gunman opened fire at an adult education centre in Sweden.Eleven people were killed in the shooting at the Risbergska School in Örebro, some 125 miles west of Stockholm,

Police in Sweden said Tuesday that "about 10 people" were killed in a shooting earlier in the day at a school for adults in the city of Orebro, west of Stockholm.

Those are the words of Swedish Prime Minister Ulf Kristersson, following what he described as the worst mass shooting in the country's history, with around 10 people killed. The shooting took place at an adult education centre - located on a campus with other schools - in the central city of Orebro at around 12:30 (11:30 GMT).