The trial of Norway's Crown Princess Mette-Marit's son, who is charged with dozens of offenses including rape and abuse, began days after his recent arrest over a new matter, according to news reports. During the first day of Marius Borg Høiby's trial on Tuesday, February 3, he pleaded not guilty to four rape charges as well as charges related to abuse and explicitly filming women without their consent, The Guardian reported. The 29-year-old is facing 38 counts in total, according to the outlet. Two days before the start of his trial, Høiby was arrested by Norwegian police the evening of Sunday, February 1, in connection with allegations of assault, making threats using a knife, and violating a restraining order, according to authorities, The Associated Press reported. Høiby's defense lawyer, Petar Sekulic, told The Associated Press that he was arrested in connection with an "incident" between him and another person. Sekulic also said that he opposed being taken into custody and has potential plans of appealing his detention. As for his ongoing trial in an Oslo court, Høiby is also facing charges related to violence, transporting marijuana, death threats and traffic violations, in addition to charges involving allegations of rape and abuse, The Associated Press reported. Norwegian Crown Princess' Son Marius Arrested on Suspicion of Rape Høiby, who does not have a royal title and is the stepson of Crown Prince Haakon, is accused of four rapes that were alleged to have occurred between 2018 and 2024, according to the outlet. His defense team told The Associated Press that he "denies all charges of sexual abuse, as well as the majority of the charges regarding violence." On February 3, Høiby pleaded guilty to a few charges on the first day of his trial, Reuters reported. The charges included offensive sexual behavior, speeding and driving without a license. He partially pleaded guilty to aggravated assault and reckless behavior, according to Reuters. On Wednesday, February 4, Høiby was described as having had a breakdown in court when he discussed his childhood, according to Reuters, which reported that he also refuted allegations that he had alleged rape-related videos on his phone. On Thusday, February 5, prosecutor Sturla Henriksboe questioned Høiby about his phone's search history, which showed he had searched the word "rape," according to Reuters. When Henriksboe asked whether he was interested in rape, Reuters reported that Høiby replied: "I have looked at a lot of weird stuff." He also denied accusations that he drugged one of his alleged rape victims on February 5, according to the outlet. If Høiby is found guilty at his trial, he could be handed a sentence of up to 16 years in prison, The Washington Post reported. Princess of Norway's Son Apologizes for Allegedly Attacking Woman In addition to public attention over Høiby's trial, his family is also under scrutiny over how his mother's name has appeared in new Jeffrey Epstein files recently released by the U.S. Department of Justice, according to the newspaper. Mette-Marit and Epstein repeatedly exchanged messages with each other, according to the files, which also reportedly showed that she had stayed at Epstein's house on one occasion. She has publicly stated that she has "deep regret" in connection with her alleged association with Epstein.