On Saturday evening, the Public Prosecutor's Office confirmed that a preliminary investigation into the girl's disappearance has been initiated.

- I can confirm that a preliminary investigation is underway.

The crime classification is arbitrariness with children, serious crime and kidnapping, says Annica Collin, at the Public Prosecutor's Office's press service.

According to Aftonbladet and Expressen, the girl's father has been arrested on suspicion of having taken her away.

- A person has been arrested and arrested last night, says Annica Collin, but adds that she can not provide any information about the arrested person is the girl's father.

How do you proceed with the case now?

- The people involved are placed in security.

The prosecutor has no further information to provide at this time.