The Los Angeles County coroner’s office was scheduled to conduct an autopsy Wednesday on Donda West, mother and manager of hip-hop star Kanye West, amid reports that she died of complications from cosmetic surgery.

A statement issued by the family late Monday offered no details about how West died, but the coroner’s office cited a recent surgical procedure as a possible cause. A California surgeon said through a spokeswoman that he had declined to perform cosmetic surgery on West months ago because she had a pre-existing condition.

West, 58, who stopped breathing at her home in Los Angeles on Saturday, was brought to the Centinela Freeman Regional Medical Center in Marina del Rey by paramedics, hospital spokeswoman Cyndee Woelfle told the Tribune. Woelfle said it was her understanding that West had had some cosmetic surgery, and that her “problems were a result of the surgery but it was not done at this hospital.”

On Monday, Patricia Green, a publicist for Donda West, told news media she understood West had undergone cosmetic surgery; later, Green backed away from that statement.