Joran van der Sloot, one of the last people to see Natalee Holloway ...

One of the last people to see American teen Natalee Holloway alive in Aruba in 2005 will be extradited to the US, said officials in Peru, where Joran van der Sloot has been in prison for murder.

Peru “decided to agree to the request for temporary surrender … (of van der Sloot) … for his prosecution in the United States for the alleged commission of the crimes of extortion and fraud” against Holloway’s mother, Justice and Human Rights Minister Daniel Maurate Romero said Wednesday in a statement.

Van der Sloot will be returned to Peru after legal proceedings against him conclude in the US, Peru’s judiciary said.

“The requesting country must keep the defendant in custody during the entire (duration of) proceedings in its territory,” the Peruvian judiciary announced on social media. “Once the criminal proceedings against (van der Sloot) conclude, he will immediately be returned to the Peruvian authorities.”

Van der Sloot, a Dutch national, was convicted in 2012 of murdering Stephany Flores, 21, in his Lima hotel room, and sentenced to 28 years in prison.

He has been indicted in the US on federal charges of extortion and wire fraud in connection with a plot to sell information about the whereabouts of Holloway’s remains in exchange for $250,000, officials said.

The missing 18-year-old’s mother, Beth Holloway, wired $15,000 to a bank account van der Sloot held in the Netherlands and through an attorney gave him another $10,000 in person, the indictment states. Once he had the initial $25,000, van der Sloot showed the attorney, John Kelly, where Natalee Holloway’s remains allegedly were hidden, but the information turned out to be false, the indictment states.

The indictment seeks for van der Sloot to forfeit $25,100, including $100 Beth Holloway initially transferred to van der Sloot to confirm his account.

Holloway was last seen in the early hours of May 30, 2005, leaving a nightclub in Aruba with van der Sloot and two other men. No one was charged in her disappearance, and her body has never been found. An Alabama judge signed an order in 2012 declaring Holloway legally dead.

Van der Sloot’s extradition from Peru to the US is expected to begin Thursday, said George Seymore, CEO of Patriot Strategies, which represents the Holloway family. CNN has reached out to the US Department of Justice, the US State Department and the governor of Holloway’s home state of Alabama for comment.

News of van der Sloot’s impending arrival in the US brought long-awaited relief to Holloway’s family.

“In May 2005 my 18-year-old daughter Natalee Holloway left Birmingham for Aruba to attend her high school graduation trip and was never seen again,” mother Beth Holloway said in a family statement released Wednesday.

“I was blessed to have had Natalee in my life for 18 years, and as of this month, I have been without her for exactly 18 years,” the statement said. “She would be 36 years old now. It has been a very long and painful journey, but the persistence of many is going to pay off. Together, we are finally getting justice for Natalee.”

Peru has an extradition treaty with the US and previously had agreed to extradite van der Sloot only after he finished serving the murder sentence, the Peruvian news agency Andina reported, meaning US officials may have had to wait until 2038.

Beth Holloway thanked Peru’s new president and supporters near and far.

“I want to express my sincere gratitude to President Dina Boluarte, the President of Peru, the warm people of Peru, the family of Stephany Flores, the FBI in Miami, Florida and in Birmingham, Alabama, the U.S. Attorney’s office in Birmingham, the U.S. Embassy in Peru and the Peruvian Embassy in the US, my longtime attorney John Q. Kelly who has worked tirelessly on this case, and George Seymore and Marc Wachtenheim of Patriot Strategies,” the mother said.

CNN’s Hande Atay Alam, Holly Yan, Claudia Rebaza, Travis Caldwell and Ralph Ellis contributed to this report.