One of the 17-year-olds is sentenced to youth service for 50 hours for sexual abuse.
He must also pay SEK 42,000 in damages to the girl.
The other 17-year-old is sentenced to a 40-day fine for sexual harassment and must pay SEK 5,000 in damages.
The third 17-year-old, the third, is sentenced to youth service for 20 hours for unlawful invasion of privacy.
He must pay SEK 17,000 in damages to the girl.
The abuse took place in the autumn of 2021 in a town in Östersund municipality.