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Swedish police probe online networks after teenage girl killed in school sword attack

By Thomson Reuters Aug 22, 2026 | 5:33 AM

STOCKHOLM, Aug 22 (Reuters) – Swedish police are investigating whether an 18-year-old man who attacked students at a Swedish high school with a sword on ​Friday, killing one, was involved in online ‌communities promoting school violence, a police source said.

The attacker struck at a school in the central Swedish town of Fagersta, also severely injuring two teenage boys before being arrested by police. ‌The ​parents of a 17-year-old girl ⁠told local newspaper Fagersta-Posten ⁠that their daughter was killed in the attack.

Police are investigating whether a TikTok account that posted a picture of a sword 20 minutes before the ​assault belonged to the suspect, the source told Reuters. According to the Dagens Nyheter newspaper, the image ⁠appeared to have been taken ⁠in a restroom at the school.

Before it ​was taken down on Friday, the month-old account contained ​videos that referred to two mass violence attacks ‌in Sweden and to Norwegian far-right mass murderer Anders Behring Breivik. It also referenced a 2015 attack, where a masked swordsman killed a teaching assistant and two ⁠boys at a school in Trollhattan, western Sweden, before being shot dead by police.

“The investigators are looking into various online ⁠communities which ‌might have egged on the suspect ⁠to carry out the attack,” the police ​source ‌said.

Prosecutors on Saturday ordered the man’s detention ​on suspicion ⁠of murder and several counts of attempted murder.

“The investigation is at an intense stage. We are conducting interrogations and gathering information, but I cannot go into specifics,” Prosecutor Ann-Sofie Trossing told Reuters.

(Reporting by Johan Ahlander; Editing ​by Emelia Sithole-Matarise)