Article continues below advertisementJoran van der Sloot, who pleaded guilty in 2023 to federal extortion charges tied to Natalee Holloway's disappearance, was described by his mother as someone with serious mental health issues in a resurfaced 2010 interview."My son is sick in his head," Anita van der Sloot admitted, per De Telegraaf, shortly after Joran's arrest nearly 16 years ago.Article continues below advertisementSource: MEGAJoran van der Sloot pleaded guilty to extortion charges in 2023.