A 15-year-old boy has been charged with a serious sexual offence, other sexual offences and the false imprisonment of a 14-year-old girl.
The incident is alleged to have occurred in west Belfast on New Year's Eve.
Three other 15-year-old boys have also been charged with false imprisonment and other sexual offences.
The PSNI says all four have been released on bail and are due to appear at Belfast Youth Court next month.