3, in a statement provided to the hollywood. Shocking new details have emerged about the sudden death of beloved actress diane keaton — sources say she was secretly battling hereditary dementia in her final months and that the final. Diane keaton, known for her unique brand of comedic timing, inimitable style and for never giving up her independence, has died. Diane keaton, whose quirky, vibrant manner and depth made her one of the most singular actors of a generation, has died Hollywood is mourning the loss of diane keaton Diane keaton's cause of death is bacterial pneumonia bacterial pneumonia is the most common type of pneumonia, and it tends to be more severe than viral pneumonia, according to cleveland clinic.
Diane keaton's death certificate has been released days after she died in santa monica at 79 years old on oct
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