Police in Sweden investigating the nation’s worst mass shooting said at a news briefing Thursday that the scene at an adult learning center was an “inferno” of smoke, with injured and dead victims.

The attack on Tuesday left 10 people dead, including the suspected shooter, at Campus Risbergska in the city of Orebro, about 200 kilometers west of Stockholm. The facility offers adult courses, including Swedish language classes for immigrants. Law enforcement officials say the shooter, who Swedish media have identified as 35-year-old Rickard Andersson, may have been a student at the center.

Law enforcement officials have not officially identified the suspect, whose cause of death remains unclear.

Orebro police Chief Lars Wiren said at the news conference Thursday that about 130 officers arrived at the scene within 10 minutes of an alarm, where they found “dead people, injured people, screams and smoke.”

As officers entered the building, they reported it was partially filled with smoke, making it difficult for them to see. They reported gunfire that they believed was directed at them but reportedly did not return fire.

Police said the smoke was not caused by fire but by “some sort of pyrotechnics.” Several officers had to seek medical treatment for smoke inhalation.

Chief investigator Anna Bergkvist said Thursday that the suspect had a license for four guns, all of which have been confiscated.

“Three of those weapons were next to him when police secured him inside the building,” she said.

Bergkvist said investigators have not determined a motive for the mass shooting, telling Agence France-Presse that “multiple nationalities, different genders and different ages” were among those who were killed.

Some information for this report came from The Associated Press, Reuters and Agence France-Presse.
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