A 17-year-old female student was fatally attacked with a sword at a high school in Fagersta, central Sweden on Friday. Police have arrested an 18-year-old suspect at the school in connection with the killing and an attempted murder. Three other teenagers were also injured during the attack, though their conditions are currently unknown. The incident has shocked the local community and prompted a swift response from authorities. Investigations are ongoing to determine the motive behind the violent act. This marks a rare instance of school violence in Sweden, typically known for its safety. The school has been closed following the tragedy, and support is being offered to students and staff.