The New York City medical examiner has determined that the death of comedian Joan Rivers, who died in September at 81, was not the result of wrongdoing. The coroner's report, which was released Thursday, determined that "death resulted from a predicted complication of medical therapy."
Rivers had been administered a dose of propofol as a sedative during a routine operation, but during the procedure the oxygen supply to her brain dropped. The report does not indicate what caused the drop in oxygen.
Rivers' daughter Melissa tweeted after the findings were released.