A gunman opened fire at an adult education center in the Swedish city of Örebro on Tuesday, killing at least 10 people in what the country’s prime minister called the “worst mass shooting in Swedish history.

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.”

Sweden reeled today from the deadliest mass shooting in its history after 10 people plus the suspected gunman were killed in a shooting at an

Gunman kills 11 at a Swedish adult education center in Örebro. Investigators say he acted alone. #Sweden #Örebro #MassShooting #GunViolence

Eleven people were killed and several seriously injured in an attack on an adult education center in Örebro on Tuesday. The suspect was found dead.

School attacks are relatively rare in Sweden, but the country has suffered shootings and bombings linked to gang violence that kill dozens of people each year.

As many as 10 people have died in a shooting at a school in Sweden, police have confirmed. The deadly attack happened on Tuesday afternoon at Risbergska School, an adult education centre, in the city of Örebro, about 125 miles west of Stockholm.

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.

Sweden’s worst mass shooting has left at least 11 people dead including the gunman and five seriously wounded at an adult education center

Officials in Sweden have vowed to determine why a man killed 10 people, and apparently himself, in an unprecedented attack that's shaken their "society to its core."