Marius Borg Høiby Trial: Norway’s ‘Bonus Prince’ Faces 40 Charges

Oslo, Norway – Marius Borg Høiby, the 29-year-classic son of Norwegian Crown Princess Mette-Marit, is currently on trial facing a total of 40 criminal charges, including allegations of rape and domestic violence. The trial, which began in early February 2026, is expected to last until March 13, 2026, and is being held at Oslo Prison, where Høiby is currently remanded in custody [1], [1].

Background and Early Life

Born on January 13, 1997, in Oslo, Norway, Marius Borg Høiby is the son of Mette-Marit Tjessem Høiby and Morten Borg [1]. His mother became Crown Princess of Norway in 2001 after marrying Crown Prince Haakon [1]. Høiby is not a member of the royal house [1].

The Charges

Initially facing 38 charges, the prosecution added six more in mid-February 2026, bringing the total to 40 [1]. These include:

• Rape (four counts, involving alleged incidents where the woman was asleep or incapacitated) [1]
• Domestic violence and assault [1]
• Threats and violence [1]
• Drug possession [1]
• Speeding on a motorcycle (three counts) [1]
• Violating a restraining order (two counts, with admissions of prior violations) [1], [1]
• Reckless behavior [1]

Høiby has admitted to some of the charges, but denies the four counts of rape [1].

Recent Developments

Prosecutors have added charges during the trial based on admissions made by Høiby [1]. He was initially arrested the day before the trial began on suspicion of threats and violence against a woman in Oslo [1]. Allegations of bodily harm and knife threats have since been dropped [1].

Testimony and Evidence

Nora Haukland, a former partner of Høiby’s between 2022 and 2023, testified in court, alleging instances of physical abuse, including being punched in the face and having her throat grabbed [3]. An audio recording was played in court where Høiby allegedly used abusive language towards Haukland [3].

Potential Penalties

If convicted on all charges, Høiby could face up to 16 years in prison [3]. Reckless behavior could result in a jail term of up to two years [1].