It is in a report to the Swedish Work Environment Authority that the head of the compulsory school Ulrika Narling describes the course of events on Thursday.
In several of the testimonies that SVT Nyheter Skåne has read, students have described how the teachers told them to stay in class after the alarm went off.
In normal cases, students must be evacuated from the classrooms when a fire alarm goes off, but the vast majority of students and teachers remained in the classroom even after the fire alarm went off, this after a school employee warned others about the act and alerted the police.
According to the incident report, it must have been the perpetrator himself who triggered the fire alarm.
Masked perpetrator
According to the report, the police arrived after seven minutes and arrested the 15-year-old who is described as masked and armed with a knife.
The 15-year-old was arrested at Lund District Court on Sunday.
He is suspected of probable cause for attempted murder.
The school employee, a man in his 40s, was taken to hospital with serious injuries.
The condition was described as stable after surgery.
Last Friday, Alma Larsson told about how she and her classmates hid under the benches in the classroom after the attack on the teacher:
Alma, 14: "Thought We Were Dead"