An 18-year-old, identified as Liam Nebel, has been arrested and detained in connection with a school attack in Fagersta, Sweden. The incident resulted in the death of a 17-year-old girl and injuries to three teenage boys. Nebel is currently suspected of murder and attempted murder. Authorities have not yet released details regarding a potential motive for the attack. The community is in shock following the violent incident at the school. Investigations are ongoing, and further information is expected to be released as it becomes available. This incident marks a tragic event for the town of Fagersta and raises concerns about school safety.