"Priscilla Presley and the Presley family are shocked and devastated by the tragic death of their beloved Lisa Marie," a rep said in a statement, asking to respect the family's privacy.
The daughter of the "King" was rushed to hospital Thursday morning, where she was placed in an artificial coma and on life support, after a cardiac arrest, according to the people site TMZ, which relied on anonymous sources.
Lisa Marie Presley was "unconscious" when her housekeeper discovered her at her home in the morning in Calabasas, an affluent suburb of Los Angeles, according to the site.
Her ex-husband Danny Keough, who also lives on the property, performed CPR until paramedics arrived and took her to hospital.
"She was the most passionate, strong and loving woman I know," her mother Priscilla Presley said in a separate statement to People, thanking fans for their "love and prayers."
The announcement of the death of Lisa Marie Presley immediately provoked a wave of saddened reactions from fans and personalities who were friends of the singer.
"Our hearts are broken by the sudden and shocking passing of Lisa Marie Presley tonight," wrote Tom Hanks, actor of the recently released biopic 'Elvis', and his wife Rita Wilson on Instagram.
Singer Lisa Marie Presley, daughter of Elvis Presley, at the release of her new CD "Now What", April 5, 2005 in Costa Mesa, California © Chris Delmas / AFP/Archives
“Lisa my little darling, I am very sorry. I will miss you but I know that I will see you again”, published John Travolta on the same social network.
"Proud"
The singer was last seen in public on Tuesday, when she attended the Golden Globes ceremony with her mother, where actor Austin Butler received an award for his role in the biopic dedicated to his father, " Elvis".
Austin Butler, whose larger-than-life incarnation of the rock'n'roll legend has been widely acclaimed, had a word with the two women during his onstage speech.
American actor Austin Butler won a Golden Globe for his title role in the biopic "Elvis", January 10, 2023 in Beverly Hills, California © Frederic J. Brown / AFP/Archives
"Thank you for opening your hearts, your memories, your home to me. Lisa Marie and Priscilla, I love you forever," he said.
Lisa Marie Presley, who said she was "overwhelmed" and "overwhelmed with gratitude", had paid tribute to the film.
"I'm so proud, and I know my dad would have been proud."
Very close to her father, who had named his private jet "Le Lisa Marie" in her honor, she was only 9 years old when he died.
Lisa Marie Presley at the Golden Globes ceremony on January 10, 2023 in Beverly Hills, California © Joe Scarnici / Getty/AFP/Archives
If she followed in her footsteps, releasing three albums during her career, she never achieved the immense success of her father, one of the most famous artists of all time.
Grief
Elvis' only child, Lisa Marie Presley previously controlled Elvis Presley Enterprises, but sold most of its shares to a private equity firm in 2005.
She had, however, retained control of Graceland, the property owned by her father in Memphis, Tennessee, where he was found unconscious in August 1977, before being taken to hospital and his death attributed to a heart attack.
Elvis' toxicology reports then revealed elevated drug levels in the rock 'n' roll legend's body.
Lisa Marie Presley also had to fight an addiction to opiates and painkillers, as she revealed in 2019 in a preface to a book on the outbreak of overdoses that has hit the United States for 20 years now.
"I am not perfect. My father was not perfect, no one is perfect," she wrote.
Lisa Marie Presley (d) and her daughter, actress Riley Keough, on October 16, 2017 in Beverly Hills, California © Frederick M. Brown / Getty/AFP/Archives
She notably gave birth to actress Riley Keough, who starred in "Mad Max: Fury Road", and had to mourn a son, Benjamin Keough, who killed himself in July 2020, according to sources. American media.
Besides Danny Keough, whom she divorced in 1994, she was also married to Nicolas Cage, Michael Jackson and actor-composer Michael Lockwood.
© 2023 AFP