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.

At least 10 people were killed in a shooting at a school for adults in the city of Örebro in central Sweden, Swedish police said Tuesday.

At least 10 people have died and many were wounded during a school shooting at an adult education center in southern Sweden on Tuesday afternoon.