Oslo Police have asked a court to keep Marius Borg Høiby under house arrest for another four weeks, arguing that the risk of him reoffending has not dropped enough to justify his release.

Høiby is the adult son of Crown Princess Mette-Marit of Norway from a previous relationship, which places him at the edge of a royal family without holding a royal title himself. His case has drawn intense Scandinavian media attention because of where he has been serving his detention: Skaugum, the official residence of Crown Prince Haakon and Crown Princess Mette-Marit, about 20 miles southwest of Oslo.

In mid-July, Høiby was released from prison to house arrest at Skaugum with electronic monitoring, according to Town & Country. The prosecution had initially appealed his placement there but dropped that appeal in mid-July, allowing him to remain at the estate, as reported by VG.

His house-arrest period was set to end this past Monday. Instead, Oslo Police filed a request to extend it by four weeks, stating in a press release that "the risk of recidivism had not been sufficiently reduced to consider it appropriate to release" Høiby, per Town & Country.

A new hearing on whether Høiby can be released is scheduled for Monday, August 10.

Høiby's defense attorney, Petar Sekulic, said he was surprised by the police request. Sekulic told reporters that law enforcement had previously given "clear signals" his client would be released Monday with a so-called reverse violence alarm — a monitoring device that alerts authorities if a protected person approaches the wearer, rather than the other way around.

The request sets up a decision point for the Norwegian courts. If granted, the four-week extension would keep Høiby confined to Skaugum into early September. If denied, he would be released under whatever conditions the court decides.

For the Norwegian royal household, the extension request prolongs an unwelcome spotlight. Skaugum is traditionally the home of the heir to the throne, and Crown Prince Haakon and Crown Princess Mette-Marit are Norway's future king and queen. Having their residence serve as a detention site for the crown princess's son has been a recurring subject of public debate since Høiby first moved there under custody terms.

What happens at the August 10 hearing will determine whether that arrangement continues — or whether Høiby walks out of Skaugum for the first time in weeks.