Diane Keaton's unexpected death at the age of 79 on Saturday, October 11 sent shockwaves through the world. When the news broke, a spokesperson for Keaton's family released a statement saying that they had “no further details available at this time,” and asking for privacy “in this moment of great sadness.” Four days later, Keaton's family has broken their silence, revealing Keaton's cause of death.

"The Keaton family is very grateful for the extraordinary messages of love and support they have received in recent days on behalf of their beloved Diane, who died of pneumonia on October 11," reads the statement, sent to People .

Keaton had kept a low profile in recent years, preferring to lead her life far from the spotlight, holed up in her California villa. Her health "deteriorated ve

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