The family of late actress Diane Keaton shared an statement with People magazine that the 79-year-old actress died of pneumonia on October 11.

Following the news of Diane Keaton's death, her family has confirmed that the beloved Oscar winner died of pneumonia on Oct. 11 at the age of 79.

Diane Keaton's newly-released death certificate has shed light on the star's decline in her final days.

A death certificate released Thursday said that the Oscar-winning actor died on Oct. 11 of bacterial pneumonia.

Her family have now issued a touching tribute to mark the actress's 50-year entertainment career

Diane Keaton's cause of death has been revealed just days after her passing at the age of 79 on October 11.

Hollywood legend Diane Keaton, who was best known for her role as Kay Adams in The Godfather and collaborations with Woody Allen, died at the age of 79 in California

Hollywood legend Diane Keaton, who was best known for her role as Kay Adams in The Godfather and collaborations with Woody Allen, died at the age of 79 in California

To those who knew her personally, Diane Keaton was a joy to be around and embraced many traditions with her friends and loved ones prior to her death.

According to a death certificate obtained by Fox News Digital, primary bacterial pneumonia is listed as Diane Keaton's immediate cause of death.