(CNN) — Twenty-four years.

That’s how much time must pass before the prime suspect in the disappearance of American Natalee Holloway faces the American justice system.

Peru has agreed to extradite Joran van der Sloot to the United States, but only after he finishes serving a 28-year murder sentence, the Peruvian news agency Andina reported. The Peruvian court system sentenced him in 2012, but he will be eligible for release in 2038 because of the time he already has spent in custody.

In the United States, he’s been indicted on federal charges of extortion and wire fraud. American authorities accuse him of extorting money from Holloway’s mother by offering bogus information about her daughter’s disappearance.

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