"I have never heard of a case like this and neither have my colleagues, so I dare to say that this kind of case is quite uncommon," prosecutor Kristina Ehrenborg-Staffas told The Local.
A 37-year-old woman, who was arrested in September, was formally charged on Tuesday at the Gothenburg District Court for the crime of "violating the peace of the dead" (brott mot griftesfriden).
The prosecutor could not explain how the woman had managed to collect almost an entire skeleton, but explained that the human remains had been used in an "unethical" way.
"In the confidential section of the investigation we have material which indicates she used them in sexual situations," the prosecutor told the TT news agency.
The woman is believed to have used the human bones for sexual gratification. The evidence that the prosecution presented to the press on Tuesday included two CDs labelled "My necrophilia" and "My first experience" which contained a number of document files and pictures.
However, a psychological evaluation of the woman shows that she is not mentally ill, at least not in any legal sense of the term.