Marius Borg Høiby Allowed to Serve Remaining Pre-Trial Detention Under House Arrest at Skaugum
Oslo, July 14, 2026
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Summary
The Oslo District Court ruled on Monday that Marius Borg Høiby may remain in pre-trial detention for four weeks wearing an electronic ankle monitor at the Skaugum estate. After the Norwegian prosecution on Tuesday waived an appeal against this decision, his transfer to electronically monitored house arrest can take place on the same day.
Oslo, July 14, 2026
The Oslo District Court ruled on Monday that Marius Borg Høiby, the eldest son of Norwegian Crown Princess Mette-Marit, may serve his ongoing pre-trial detention in the coming weeks with an electronic ankle monitor at the Skaugum estate; the prosecution waived its objection on Tuesday.
Marius Borg Høiby, the eldest son of Norwegian Crown Princess Mette-Marit, has been at the center of a high-profile criminal case in Norway for months. As Norwegian public broadcaster NRK reported on Tuesday, the Oslo prosecution has now relented on a decisive point. This means the 29-year-old can serve the remaining portion of his current pre-trial detention under significantly relaxed conditions.
The Oslo District Court had ruled on Monday that Høiby may remain in pre-trial detention for four weeks wearing an electronic ankle monitor at the Skaugum estate. Although the court ordered the pre-trial detention to continue for a further four weeks, it expressly allowed this form of custody to be carried out as house arrest with electronic monitoring at the royal family's estate.
This means he will leave the facility where Høiby has been held until now. In the future, he is to spend his daily life behind the familiar walls of Skaugum, with an electronic ankle monitor on his leg that makes his movements traceable at all times. According to the responsible police prosecutor Oda Karterud, this means concretely: "Das bedeutet, dass der Beschuldigte heute in Haft mit elektronischer Überwachung überführt wird".
District Court Decision and New Place of Detention
The Oslo prosecution is refraining from filing an appeal against the District Court's Monday ruling. This was announced by the Oslo Police District. "Die Staatsanwaltschaft hatte bis Dienstag um 12 Uhr Zeit, gegen den Beschluss Berufung einzulegen", it said. With this deadline passing without objection, the court decision is now final and enforceable.
The background to the proceedings is a verdict from June in which Høiby was found guilty, among other things, of two rapes under Norwegian law as well as violence against a former girlfriend. The court imposed a prison sentence of four years. However, this verdict is not yet final. The prosecution had previously applied for an extension of pre-trial detention by four weeks, citing among other reasons the danger that Høiby would commit further offenses.
The police's assessment that there was a risk of recidivism from Høiby was, however, no longer shared by the court on Monday to the extent that would have been necessary to continue classic detention. While it accepted further custody, it expressly permitted the milder form of house arrest with electronic monitoring.
Background: Conviction and Pending Appeal
Parallel to this, further judicial measures are ongoing against the 29-year-old. A contact ban is in place concerning the affected ex-girlfriend, which Høiby is said to have violated multiple times according to several sources. This circumstance also played a role in recent weeks when a tightening or loosening of his detention conditions was being discussed.
The Norwegian Marius Borg Høiby is connected to the Norwegian royal family not by marriage but by blood. He is the eldest son of Crown Princess Mette-Marit and comes from an earlier relationship of Mette-Marit's before her marriage to Crown Prince Haakon. Although he holds no official title, his person has attracted international media interest due to the connection to the royal family.
Connection to the Norwegian Royal House
The Norwegian Royal House itself also announced on Tuesday that Crown Princess Mette-Marit's state of health was good given the circumstances. The 52-year-old had been able to leave the hospital after a lung transplant, roughly four weeks after the procedure. "Er wisse, dass die Genesung noch lange dauern werde, aber es sei ein sehr gutes Gefühl, so weit gekommen zu sein", Crown Prince Haakon had previously stated.
The transfer to house arrest takes place on Tuesday, as the responsible police prosecutor explained. This ends a phase in which Høiby had been held in a regular detention facility since his arrest. The coming weeks he will spend at Skaugum, the historic estate of the Norwegian royal family.
At the same time, further proceedings against Høiby are ongoing outside this detention ruling. In June, he was convicted by the Oslo District Court, among other things, of two rapes under Norwegian law and violence against an ex-girlfriend. The legal remedies filed against this have not yet been finally decided, so the verdict is formally not yet final.
Timeline and Next Steps
It remains unclear how the appeal proceedings in the main case will turn out. Should the appeals chamber confirm or even increase the first-instance sentence, Høiby might have to serve his detention again in a correctional facility under certain circumstances. However, it is also possible that the conditions at Skaugum will change in the course of the appeal proceedings.
What is certain is that the prosecution has now accepted the path of house arrest opened by the court on Monday. Thus, today's transfer to electronically monitored house arrest at Skaugum is the provisional endpoint of a weeks-long debate over the duration of detention, place of detention, and security measures.
The attention of the Norwegian and international public is meanwhile directed not only at the upcoming appeal proceedings but also at the family itself. With Crown Princess Mette-Marit's recovery and her son's transfer to house arrest, two developments coincide in time that mark a phase of intense strain for the Norwegian royal house.
Even though the exact modalities of the house arrest - radius of movement, permitted contacts, conditions imposed by the probation authorities - have so far only been partially made public by the authorities, it is clear that the electronic ankle monitor makes his movements spatially traceable at all times.
The entire proceedings underscore the tension between the security interests of the general public - particularly in light of the assumed risk of recidivism - and a defendant's claim to detention conditions that are as least burdensome as possible, as long as the verdict is not final.
Questions & Answers
Why is Marius Borg Høiby now allowed to be under house arrest at Skaugum?
Because the Oslo District Court ruled on Monday that the ongoing four-week pre-trial detention may be served as house arrest with an electronic ankle monitor at the Skaugum estate, and the Oslo prosecution waived an objection to this ruling on Tuesday.
Whose allegations underlie the proceedings against Høiby?
Marius Borg Høiby was sentenced in June to four years' imprisonment, among other things, for two rapes under Norwegian law and for violence against a former girlfriend; in addition, a contact ban is in place in favor of this ex-girlfriend.
Is the verdict against Marius Borg Høiby already final?
No, the four-year prison sentence imposed in June is not yet final based on the current status; the current decision concerns only the continuation and form of pre-trial detention, not the main proceedings.
Marius Borg Høiby: House Arrest at Skaugum - Prosecutors | allfacts360