Police have confirmed that 11 people have now died following a mass shooting at an adult education school in Sweden and the number of injured is currently unclear.

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.”

Swedish police are investigating for a motive after a school shooting in the city of Örebro that has killed at least 10 people. NBC News’ Matt Bradley reports on what is known about the shooting.