Marius Borg Hoiby was sentenced to four years in prison Monday after being convicted of rape and domestic violence [1, 2].

The verdict marks a significant legal fall for the 29-year-old, who is the son of Crown Princess Mette-Marit and the stepson of Norway's Crown Prince Haakon [1, 3]. Because of his proximity to the royal family, the case has drawn intense public scrutiny regarding the intersection of privilege and criminal accountability in Norway.

The Oslo District Court found Hoiby guilty of two counts of rape [1, 4], and one count of domestic violence [1, 4]. The court determined that the offences were committed against two different women [1, 2]. Some of the incidents occurred on the estate of the Crown Prince [1, 4].

Hoiby received a total sentence of four years in prison [1, 2]. The proceedings concluded on June 15, 2026 [2, 3].

While Hoiby does not hold an official royal title, his relationship with the royal household has kept him in the public eye for years. The court's decision to impose a multi-year prison term reflects the severity of the sexual and domestic violence charges brought against him [1, 3].

Marius Borg Hoiby was sentenced to four years in prison Monday

The conviction of a close relative of the Norwegian royal family serves as a high-profile test of the country's judicial impartiality. By sentencing Hoiby to four years in prison, the Oslo District Court has signaled that familial ties to the monarchy do not provide immunity or leniency in cases of violent crime and sexual assault.