agreement to cooperate and allow investigators from Aruba to interview Van der Sloot at Miguel Castro Castro prison in Peru. In a September 2010 interview from the prison, Van der Sloot reportedly admitted to the extortion plot, stating: "I wanted to get back at Natalee's family—her parents have been making my life tough for five years." On January 11, 2012, Van der Sloot pleaded guilty to murdering Flores and was sentenced to 28 years in prison. Declaration of death In June 2011 (six years after Natalee's disappearance), Dave Holloway filed a petition with the Alabama courts to have his daughter declared legally dead. The papers were served on his ex-wife Beth Twitty, who announced her intention to oppose the petition. A hearing was held on September 23, 2011, at which time Probate Judge Alan King ruled that Dave Holloway had met the requirements for a legal presumption of death. On January 12, 2012, a second hearing was held, after which Judge King signed the order declaring Natalee Holloway to be dead. Unrelated bone discovery, contested Oxygen documentary On November 12, 2010, tourists found a jawbone on an Aruban beach near the Phoenix Hotel and Bubali Swamp. Preliminary examination by a forensic expert determined that the bone was from a young woman. A part of the bone was sent to The Hague for testing by the Netherlands Forensic Institute. On November 23, 2010, Aruba Solicitor-General Taco Stein announced that based on dental records, the jawbone was not of Holloway, and it was not even possible to determine whether it had come from a man or woman. In 2016, Dave Holloway hired a private investigator, T.J. Ward, to once more go through all evidence and information related to the disappearance of his daughter. This led to an informant, Gabriel, who claimed to have been a roommate of one of Van der Sloot's closest friends, American John Ludwick, in 2005. Gabriel claimed that Ludwick was told what became of Natalee. In an interview with the Oxygen television channel, Gabriel gave a detailed description of what happened on the night of Natalee's disappearance. Oxygen created a new documentary series on Natalee's disappearance that aired on August 19, 2017. Using Gabriel's information, the investigator had found what appeared to be human bones. On October 3, 2017, DNA testing concluded that one piece of bone was human but did not belong to Natalee. On the show,