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 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, 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,

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 Høiby, the eldest son of Crown Princess Mette-Marit, will be released from custody following his arrest last week on rape allegations. However, Oslo police have launched a separate investigation into a new alleged sexual offence, for which he has not been charged. Details of the new case have not yet been disclosed.

The eldest son of Norway's crown princess, suspected of two rapes, was released from custody on Wednesday, police said, adding that he was now suspected of another sex crime.

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.

Marit, has been released after spending a week in custody on suspicion of committing sex offences. Police announced on Wednesday morning that they would not be seeking further pre-trial detention for the eldest son of Crown Princess Mette-Marit.