Lisa Marie Presley died from a small bowel obstruction caused by bariatric surgery, the Los Angeles County coroner said Thursday.

A report released by the office of the Los Angeles County Medical Examiner-Coroner said the complication is common for patients that undergo bariatric surgery, which is a procedure that involves making changes to your digestive system to help you lose weight, according to the Mayo Clinic.

Bariatric surgery is done when diet and exercise haven’t worked or when someone has serious health problems because of their weight.

Presley died Jan. 12 at the age of 54 at a Los Angeles hospital she was rushed to by paramedics after they responded to a 911 call of a cardiac arrest at her home.

The autopsy report noted she had been complaining of stomach pain.

The singer-songwriter was the daughter and heir of Elvis Presley and left behind three daughters; 34-year-old actor Riley Keough, and 15-year-old twins Harper and Finley Lockwood. Presley’s son, Benjamin Keough, died in 2020.

She was buried Jan. 22 at Graceland — a common tourist attraction for Elvis fans — which was the Memphis home where she lived with her father as a child.