The toxicology reports are in and indicate that there were no drugs in Amy Winehouse's system when the 'Rehab' singer passed away exactly one month ago. Winehouse, 27, was found dead in her bed in her London home on July 23.

Due to the singer's public battles with drugs and alcohol, it was almost a foregone conclusion that she had overdosed. But the Associated Press reports that the tests showed that no illegal drugs were present in her system.

While no drugs were found, there was alcohol present in her system but it has yet to be determined if it factored into her death.

A statement released by spokesman Chris Goodman on the Winehouse family's behalf read as follows: "Toxicology results returned to the Winehouse family by authorities have confirmed that there were no illegal substances in Amy's system at the time of her death." A full investigation into the cause of death is set to begin in October.

There were many rumors and reports about what caused or could have caused the singer's tragic death. Some reports stated she partied hard and bought illicit substances then night before, while others indicated she may have died of alcohol withdrawal, since she was said to be in the process of beating her alcohol addiction, but that the battle was fraught with relapses.

Mitch Winehouse told mourners at the singer's July 26 funeral that she had said to him, "Dad I've had enough of drinking, I can't stand the look on your and the family's faces anymore."

Mr. Winehouse is currently working on establishing the Amy Winehouse Foundation, which will assist others who struggle with addiction as Amy did. Those plans are on hold while he deals with wrestling the already registered name away from its owner.