Elvis Presley's ex-wife Priscilla has pleaded with the superstar's fans to "please calm down" after reports suggested two jets previously owned by the King were set to be removed from the grounds of his Graceland home. Estate officials at the Memphis, Tennessee mansion were recently said to have asked the current owners of the Lisa Marie and the Hound Dog II to find a new home for the planes as they were exercising their option to end a 30-year agreement to keep them at the Graceland tourist attraction. The news sparked outrage among some devotees, who complained about the removal online, but now Priscilla Presley has spoken out about the situation, insisting they are still trying to work out a deal with owners at OKC Partnership in Memphis to keep the jets at Graceland. In a post on her Facebook.com page, Priscilla writes, "please calm down, we're in the midst of negotiations." Bosses at Elvis Presley Enterprises, who operate the venue, installed the planes at Graceland in the mid-1980s. The Hound Dog II was previously owned by Hustler magazine boss Larry Flynt.