Joran van der Sloot, the prime suspect in the unsolved 2005 disappearance of American teenager Natalee Holloway, has lost his extradition appeal and will be sent to the United States on Thursday, according to the Peruvian Supreme Court.

Van der Sloot had filed “a habeas corpus application against the citizen extradition process,” according to a court document, and on Monday he refused to sign the laissez-passer that would allow him to be extradited, his lawyer told ABC News.