The suspect, who is 21 and from Trollhättan, was shot and received medical attention. He later died at the hospital.
The media is reporting the attacker wore a Star Wars mask. USA Today noted: "the perpetrator was wearing a Darth Vader-like mask from Star Wars and that students initially thought it was a Halloween joke. The attacker even posed for pictures with two students before going on a rampage."
At some point during the rampage, he posed for a picture taken by a female pupil who thought the incident was a Halloween stunt, according to Swedish newspaper Aftonbladet.
The attacker was holding his weapon, which was covered in blood, but the pupil did not realize the blood was real, she said.
The weapon used was a katana. Historically, katana were one of the traditionally made Japanese swords (日本刀) that were used by the Samurai of feudal Japan.
Local police have confirmed that they are investigating reports that the suspect held far right beliefs.
Marty McFly: Silence, Earthling. My name is Darth Vader. I am an extraterrestrial from the planet Vulcan! ~ Back to the Future (1985), in which the time travel date of significance is October 21, 2015.
"Columbine Goes International: After Littleton, the copycat effect involving school shootings went global." ~ The Copycat Effect, 2004.
Trolls are generally associated, during our modern era, with Internet mischief makers and small beings. But traditionally, in Scandinava, trolls are ogres who are said to be man-sized to gigantic.
"Some traditions of 'wild men' tell of man-like beings that exceeded human beings in height, but at their greatest heights were not more than around 7 feet tall. We would identify them as Trolls and possible descendants of Neandertals. Descendants of both those distinctive and hairy near-men are known to have survived into recent times." ~ True Giants (Anomalist Books, 2010).