Lisa Marie Presley's cause of death hasn't been announced yet, because toxicology tests are pending.
But TMZ spoke to family sources who claim she was back taking opioids when she died. Lisa Marie had struggled with addiction on and off over the years.
She was also on an extreme weight loss regimen because she wanted to look good when celebrating the movie "Elvis" at the various award ceremonies. She had reportedly lost 40 to 50 pounds in six weeks.
Sources say that she suffered from abdominal pain on the morning she died.
Read More HERE
Photo: Getty Images