 Police found small cages on the scene and said it looked like a human trafficking operation. The FBI said that Callahan told an investigator he wanted to keep the older child as a sex slave. Callahan was arrested along with an accomplice, 32-year-old Victoria Cox. There's more on this story at FoxNews.com. Subscribe to the Fox True Crime Podcast with Emily Campagno. I'm Gianna Gelosi with your Fox True Crime Minute.