Lisa Marie Presley, the only daughter of Elvis Presley and Priscilla Presley, died Thursday, according to her mother, hours after being hospitalized after an apparent heart attack.

She was 54 years old at the time.

“Priscilla Presley and the Presley family are appalled and bereaved by Lisa Marie’s untimely death,” Priscilla Presley stated in a statement provided by a spokesperson to CNN. “They are truly appreciative for everyone’s love, support, and prayers during this difficult time.”

According to her mother’s Instagram post, Lisa Marie Presley was taken to the hospital earlier in the day.

“Please keep her and our family in your thoughts and prayers,” she said in a statement.

TMZ initially reported Lisa Marie Presley’s hospitalization on Thursday.

According to LA County Fire Department spokesman Kaitlyn Aldana, emergency services were called to the 5000 block of Normandy Dr in Agoura Hills, California, at 10:37 a.m. local time, for a cardiac arrest. Aldana did not confirm the patient’s name, which was withheld due to privacy laws, but said the patient was sent to a neighboring hospital at 11:17 a.m.

A Los Angeles County Sheriff’s Department spokeswoman told CNN that they assisted fire officials on a medical call this morning but would not reveal the patient’s name.

Lisa Marie Presley was most recently seen at the Golden Globes with her mother to support the Baz Luhrmann film “Elvis,” which is based on her late father.

Benjamin Keough, Lisa Marie Presley’s son, committed suicide at 27 in 2020. Last July, she marked the second anniversary of Keough’s death by posting photographs of their matching foot tattoos on Instagram.

Lisa Marie Presley has had relationships with Michael Lockwood, Nicolas Cage, Michael Jackson, and Danny Keough. In addition to her late son, she was the mother of actress Riley Keough, Finley Aaron Love Lockwood, and Harper Vivienne Ann Lockwood.

Lisa Marie Presley spoke about her son’s death in a September essay for National Grief Awareness Day.

“His death detonated and ruined my and my three children’s existence. Every day, we live in this world. Regardless of what certain individuals or our culture would have us believe, you will have to deal with grief for the rest of your life. You don’t ‘get over it,’ nor move on.”

Lisa Marie Presley also stated in the essay that she finds consolation in the presence of others who have experienced similar tragedies and that her girls help her stay strong.

“I’ll keep fighting for my girls,” she wrote. “I keep going because my son made it very plain in his final moments that taking care of his small sisters and watching out for them were at the top of his concerns and mind.”