., and cnn's jean casarez is now going to explain how this is all related to holloway's disappearance 18 years ago. >> reporter: 18 years after alabama teenager natalee holloway vanished on a school trip in aruba, the prime suspect in her disappearance is being extradited to the united states. joran van der sloot, who was one of the last people to see holloway alive and twice detained in connection with her disappearance, will finally face federal charges in the u.s. for extortion and wire fraud. >> he knows exactly what happened. he knows what, where, when, who, why and how. he knows the answers. >> reporter: he is accused of extorting thousands from holloway's mother, beth, in exchange for details on the location of her daughter's remains. according to legal documents, in march 2010 van der sloot, quote, offered to take the cooperating witness to the location of natalee holloway's body, advise as to the circumstances of her death and identify those in her death and disappearance in return for a payment of $250,000. papers were signed. a total of $25,000 was given to van der sloot. a