Four young men were arrested during the night and detained in the morning, suspected of aggravated rape.
The four suspects and the victim girl were questioned on Saturday.
The detention of one of the four has been lifted, but the other three are still detained, suspected on probable grounds, says Moa Hörnquist at the Prosecutor's Office press service.
In the case, there are additional criminal suspicions where another young woman is the plaintiff, but it does not concern any sexual offense, according to Hörnquist.
According to information provided to Aftonbladet, the incident took place at a party. A residence where the crime is believed to have occurred was cordoned off for technical investigation.
In the morning (Sunday), the investigation will continue with new questioning, says Moa Hörnquist.
