It's been two months since the "King of the Blues," B.B. King, passed away in Las Vegas at the age of 89. Shortly after King's death, his two daughters claimed that two of their father's closest aides had poisoned him. The autopsy has proved there is no evidence of that.

It turns out the blues legend died of natural causes and that Alzheimer's disease was the "primary contributing factor," Clark County coroner John Fudenberg told Rolling Stone. Many health issues were "significant contributing factors" in his death, including type 2 diabetes, coronary artery atherosclerosis, congestive heart failure, hypertension and cerebral vascular disease.

"There was no evidence of poisoning," Fundenberg confirmed, adding that the investigation is done.

These findings contradict everything Patty King and Karen Williams had said about their father's manager, LaVerne Toney, and longtime assistant, Myron Johnson. The daughters believed Toney and Johnson poisoned King just weeks before he passed away.

"I believe my father was poisoned and that he was administered foreign substances. I believe my father was murdered," the two said in court documents at the time. Brent Bryson, a lawyer for the case, wasn't too pleased with the daughters' claims.

"It is unfortunate that Mr. King's body had to be subjected to a needless autopsy based on fictional assertions. As expected, the autopsy report confirms that Mr. King died as a result of natural causes and not as the result of poisoning or other wrongful conduct," Byrson said in a statement. "Perhaps we can now foxus on the body of musical work Mr. King left the world and stop the 'witch hunt' so that Mr. King may now finally rest in peace."

Bryson believed the daughters' claims were "ridiculous" from the start.

"Unfortunately even musical icons die," Bryson said in a statement to Us Weekly. "Ms. Toney did everything she could to carry out the wishes of Mr. King while he was alive, and continues to carry out Mr. King's wishes after his death."