Investigators had not uncovered a definitive motive behind the bloodshed by Thursday. Police said there were no warnings beforehand, and they believe the perpetrator acted alone. Authorities said there were no suspected connections to terrorism at this point.

Police in Sweden said "about 10" people were killed in a shooting at an adult education school . The shooting occurred at Campus Risbergska in Örebro, Sweden, the city said in a statement. Police say the shooter is believed to have been killed.

At least ten people have been killed in a school shooting in the central Swedish city of Örebro on Tuesday, according to authorities. Swedish police said they believe the suspect — a man — to be among the dead. They said the perpetrator acted alone but added the investigation was still in its early stages.

Police said at least 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 also died. A large number of people were injured after a gunman opened fire at a campus in the city of Örebro in central Sweden,

Teachers tell of horror as 11 dead in worst mass shooting in country's history - Police say the suspect in the shooting at Risbergska School in Örebro is among those who died