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).

A gunman opened fire Tuesday in an adult education center, leaving about 10 people, including the gunman, dead in what Sweden’s prime minister called the country’s worst mass shooting. A final death toll, a conclusive number of wounded, and a motive hadn’t yet been determined hours later.