Lisa Marie Presley’s memoir, which she had been working on at the time of her death, will be released later this year.

The as-yet-untitled book has been completed with help from her daughter Riley Keough.

Presley, daughter of the legendary Elvis Presley and Priscilla Presley, died last year at the age of 54 following complications from bariatric surgery she had several years ago.

The January 12 death of the singer and songwriter was ruled as being from natural causes due to the effects of a small bowel obstruction.

The book about Presley’s life will be released by Pan Macmillan on October 15, The Guardian reports.

According to the publisher, Presley had asked Keough to help her finish her long-gestating memoir.

The book has been described by publishers as a “raw, riveting, one-of-a-kind memoir” that will “lift the veil on one of America’s most storied families, sharing intimate memories of Lisa Marie’s remarkable, tumultuous life while offering a poignant exploration of the bonds between a mother and daughter”.

Keough will also record an audiobook version of the memoir.

She said in a statement: “Few people had the opportunity to know who my mom really was, other than being Elvis’s daughter.

“I was lucky to have had that opportunity and working on preparing her autobiography for publication has been a privilege, albeit a bittersweet one.

“I’m so excited to share my mom now, at her most vulnerable and most honest, and in doing so, I do hope that readers come to love my mom as much as I did.”

“I’m honoured to help put my mother’s book out for her,” Keough wrote on Instagram.

Sara Cywinski, publishing director at Pan Macmillan, said she is “glad that there is an opportunity for the world to see Lisa Marie as Riley, and those closest to her, saw her. And, too, for the generations to come to understand the complexity of being a Presley.”