Doctors disturbingly conducted an unauthorized procedure on Joan Rivers while one proceeded to take a selfie. He did a biopsy on Joan's vocal cords while she was still under anesthesia. Rivers's doctor was not authorized or certified to do this procedure but they did it anyway. Her vocal cords started to swell, cutting off her oxygen and she died of cardiac arrest.

Wow I never heard that that was the reason, I knew she died shortly after the Big Mike incident, but thought it was a "heart attack" or something. I had a suspicion of murder, but didn't realize just how blatant it was.