The police were alerted to Helsingborg's hospital during the night to Saturday after suspicions that a young woman may have been raped.
It is a woman in her early 20s who says that she has been on the festival area, got a drink from an unknown guy and then does not remember what has happened, says Louise Gunnarsson, group manager for crimes in close relationships, to the newspaper.
About 20,000 people visited the festival during the weekend and the police are now investigating surveillance footage from the area.
So far, there is no suspect.
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