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

The 27-year-old son of Norway’s crown princess has been accused of a second rape just days after he was arrested on suspicion of the same offense.

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.

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 following rape allegations. Norwegian police arrested the stepson of the Crown Prince of Norway at an address near Skaugum,