The circumstances leading to the tragic and unexpected death of Amy Winehouse remain a mystery, but we now know that it was not the result of a drug overdose. According to NME, the singer’s toxicology report found “no illegal substances” in her system at the time of her death. The report did, however, find the presence of alcohol, but stressed “it cannot be determined as yet if it played a role in her death.”

The complete results of Winehouse’s toxicology and histology tests will be unveiled in late October.