At least 10 people, including the gunman, were killed Tuesday at an adult education center in what Sweden’s prime minister called the country’s worst mass shooting. But a final death toll, a conclusive number of wounded and a motive hadn’t yet been determined hours later.

The shooting, at a center for adult education in the city of Orebro, was the worst mass shooting in Swedish history, the country’s prime minister said.

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).