The family of Diane Keaton issued a statement revealing the cause of his death. He thanked his fans for their messages of support and informed the magazine People the reason for his death on Saturday.

“The Keaton family is very grateful for the extraordinary messages of love and support they have received these past few days on behalf of their beloved Diane, who passed away from pneumonia on October 11,” the statement said.

In statements to Peoplesuggested that his fans can make donations in his memory to a food bank, or an animal shelter. "He loved his animals and strongly supported the homeless.so any donation in his memory to a local food bank or animal shelter would be a wonderful and greatly appreciated tribute," they said.

Keaton died in Los Angeles on Saturday, aged 79.. Paramedics came to her home and took her to a nearby hospital.

A friend had commented that the star's health had "deteriorated very suddenly" in recent months, and that only her close family was aware, so she decided "keep the situation private".

"It was so unexpected, especially for someone with so much strength and spirit. In her last months, she was surrounded only by her closest family, who decided to keep everything private. Even some lifelong friends did not know what was happening," the same source said.

Composer Carole Bayer Sager, Oscar winner for the title song of Arthur, the seductive millionaire (Best That You Can Do), and close friend of Diane Keaton, revealed that she had lost a lot of weight in the last few days before she died.

Since Saturday, her castmates from several films and friends have paid tribute to the Oscar-winning actress, who, in addition to starring in dozens of notable films, was known for her passion for architectural preservation and her love of animals.

So much so that starting Friday, the American cinema chain AMC Theaters will re-release Annie Hall: Two Strange Lovers y Someone has to give inin which he shared the lead role with Jack Nicholson. It will be for a week to commemorate his memory. Keaton won the Oscar for best female lead performance for Annie Halldirected by Woody Allenand was nominated for best actress for Redsby and with Warren Beatty, the aforementioned Someone has to give in y reunionin which he shared a cast with Meryl Streep and a young Leonardo DiCaprio.