The girl disappeared on March 14. Four days later, she was found dead near her school. The now accused - 17 years old at the time of the suspected murder - was arrested in March and has been detained since then.
According to prosecutor Nina Friman Björk, the investigation shows that the girl died on the same day she was reported missing.
She was killed, according to the indictment, through severe violence against her head, neck, and body. The autopsy also showed that she had been raped.
There is an injury pattern, I believe, that indicates she was subjected to rape, says Nina Friman Björk.
However, she does not want to go into details about the suspected course of events before the trial.
Psychological disorder?
According to the police, there is extensive technical evidence. The 18-year-old denies the crime.
He has undergone a so-called paragraph seven examination, which suggests that he may have suffered from a serious psychological disorder both at the time of the suspected murder and when the examination was conducted.
It's something that the district court will have to weigh in its assessment. But the usual is that the suspect then undergoes a more in-depth examination, which will determine whether he can be sentenced to prison or not, says Nina Friman Björk.
"Affected many"
The case has received widespread attention and evoked many emotions in the small town.
"It has been a case that has affected many and where young people have been involved. It has meant that many considerations have had to be taken during the investigation", says investigation leader Emma Jutemar in a comment.
At the same time, the police have been criticized by, among others, the girl's relatives, since it took four days after the disappearance before the police launched a special investigation. A review of the police's work has been conducted, but not yet made public.
The trial in Borås District Court begins on September 10, likely to a large extent behind closed doors.
I will request closed doors, given that it concerns a sexual offense, but also due to the defendant's age, says Nina Friman Björk.