Marius Borg Høiby Trial: Norway’s ‘Bonus Prince’ Faces Serious Charges

Oslo, Norway – Marius Borg Høiby, the 29-year-old son of Norwegian Crown Princess Mette-Marit, is currently on trial in Oslo facing a multitude of criminal charges, including rape and domestic violence. The high-profile case has drawn significant media attention, particularly given the family’s connection to the Norwegian royal house.

Background and Early Life

Born on January 13, 1997, in Oslo, Marius Borg Høiby is the son of Mette-Marit Tjessem Høiby and Morten Borg. His mother became Crown Princess in 2001 upon her marriage to Crown Prince Haakon. Høiby is not a member of the royal family and holds no official position, but has grown up within the extended royal family circle [1].

The Current Trial and Allegations

The trial, which began in February 2026, is expected to last until March 13, 2026 [6]. Høiby is facing 38 criminal counts, initially including four counts of rape and various assaults [2]. Six additional charges were added in mid-February 2026: one count of drug possession, three counts of speeding on a motorcycle, and two counts of violating a restraining order [9]. An additional charge was added in early March [10].

He is currently held at Oslo Prison [1]. If convicted on the most serious charges, he could face up to 16 years in prison [2].

Testimony and Evidence

Nora Haukland, Høiby’s former partner between 2022 and 2023, has testified in court, alleging a pattern of physical and psychological violence during their relationship. She described incidents where Høiby allegedly punched her in the face and frequently grabbed her by the throat [2]. An audio recording played in court reportedly captured Høiby using abusive language towards Haukland [2].

Another woman testified that she suspected she may have been drugged after consensual sex with Høiby at his parents’ home, but has no recollection of what happened afterward [3].

Royal Family Scrutiny

The trial coincides with increased scrutiny of the Norwegian royal family following the release of files revealing Crown Princess Mette-Marit’s past correspondence with the late Jeffrey Epstein [2]. Crown Princess Mette-Marit has expressed regret over the correspondence and postponed a private trip in light of the ongoing trial [3].

Previous Conviction

Høiby was previously convicted of drug possession in 2017 [1].