Police said “around 10 people” were killed at a school on Tuesday, in what has been described as the worst mass shooting in Sweden’s history. The suspected perpetrator is among the dead.

Eleven people were killed in a shooting at the Risbergska School in Örebro, some 125 miles west of Stockholm, on Tuesday.Police said the gunman was believed to be among those killed and a search for other possible victims was continuing at the school.

About 10 people including the gunman have been killed at an adult education center in what Sweden’s prime minister called the country’s “worst mass shooting.”