The eldest son of Norway's Crown Princess Mette-Marit is to be released from custody after his arrest last week on rape allegations.

Marius Borg Hoiby, 27, was arrested in Oslo late on Monday last week on a preliminary rape charge - but police are now investigating a new alleged sexual offence

On Nov. 19, Crown Prince Haakon spoke about the arrest of his stepson, 27, the day prior. Crown Prince Haakon is Marius' stepfather through his marriage to Crown Princess Mette-Marit. Mette-Marit welcomed her son Marius during a relationship that preceded her 2001 marriage to Haakon, and Marius does not have a royal role within the monarchy.

Marius Borg Hoiby, the stepson of Crown Prince Haakon of Norway, was arrested on Monday. His lawyer denied the accusation and said his client was cooperating with the authorities.

Crown Princess Mette-Marit of Norway's son will be held in prison for up to a week while police investigate allegations of rape made against him, an Olso court ruled on Wednesday night. Marius Borg Hoiby, 27, was arrested on Monday night on suspicion of rape, marking the third time he has been arrested since August.

COPENHAGEN, Denmark -- The eldest son of Norway’s Crown Princess Mette-Marit has been arrested again, this time on suspicion of rape, police said Tuesday. Marius Borg Høiby is the stepson of the heir to the Norwegian throne, Crown Prince Haakon, and the son of Mette-Marit from a previous relationship. He has no royal title or official duties.

Marius Borg Hoiby, the eldest son of Norwegian Crown Princess Mette-Marit, is to be released from custody after his arrest last week on rape allegations.

Marius Borg Hoiby, the eldest son of Norwegian Crown Princess Mette-Marit, is to be released from custody after his arrest last week following rape allegations. Norwegian police arrested the stepson of the Crown Prince of Norway at an address near Skaugum,