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.

Swedish police said the gunman in the country’s worst mass shooting was connected to the adult education center where he opened fire Tuesday, killing 10 other people

Swedish police found three rifles in the adult education centre in Orebro where a gunman killed 11 people and wounded several others this week in the country's deadliest mass shooting, a spokesperson said on Thursday.

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.

Swedish police on Thursday described Tuesday’s school shooting as a “hellish” event that left 11 people dead, confirming that the suspected perpetrator was found dead with three licensed firearms in his possession.