Marius Borg Hoiby faces a total of 38 charges, including assaulting ex-girlfriends and a serious drug offense in addition to the four counts of rape, and risks up to 16 years in prison if found guilty.

Marius Borg Høiby, who goes on trial on Tuesday, has been remanded in custody for four weeks after new allegations.

The son of Norway's crown princess was arrested on new assault charges Sunday just before his trial begins on Tuesday for four rape charges.