Award-winning actress Diane Keaton has died aged 79.
The Godfather star died in California, a family spokesman told People magazine.
The spokesman said no further details are currently available and that her family has requested privacy at this time.
She is survived by her two children, Dexter and Duke Keaton.
The Godfather star Diane Keaton died in California aged 79
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The celebrated actress made her film debut in 1970’s Lovers and Other Strangers, but her big break came in Francis Ford Coppola’s The Godfather, in which she starred as Kay Adams.
The Godfather, released in 1972, was based on the novel by Mario Puzo.
However, Ms Keaton confessed that she did not read the book before auditioning for the role, telling People in 2022: "I think the kindest thing that someone's ever done for me ... is that I got cast to be in The Godfather and I didn't even read it. I didn't know a single thing.
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Diane Keaton scooped an Oscar for her role in Woody Allen's Annie Hall
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"I just was going around auditioning. I think that was amazing for me. And then I had to kind of read the book."
She was known for her starring in several other hit films, including Father of the Bride, Annie Hall and First Wives Club.
Ms Keaton received a number of accolades throughout her career.
She won an Oscar for Woody Allen’s influential film Annie Hall and became associated with the title character’s menswear-centric wardrobe.
Diane Keaton starred as Kay Adams in The Godfather trilogy
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She further earned Academy Award nominations for best actress for her portrayal of U.S. journalist Louise Bryant in the 1981 political drama "Reds," as a caring aunt to Leonardo DiCaprio in the 1996 family saga "Marvin's Room" and opposite Jack Nicholson in the 2003 romantic comedy "Something's Gotta Give."
Alongside her acting career, she was also a director, writer, producer, and photographer and had a passion for restoring California mansions.
Ms Keaton was born Diane Hall in Los Angeles on January 5, 1946.
The oldest of four children, she adopted her mother's maiden name to avoid confusion with another actress with the same moniker.
Her father, a civil engineer, and her housekeeper mother moved the family to suburban Santa Ana when Keaton was a child.
Despite her well-publicised romances, including with Godfather co-star Al Pacino and Woody Allen, she never married.
"I think I was really afraid of men and also very attracted to extremely talented people that were dazzling," she told Elle magazine in 2015.
She adopted her daughter, Dexter, in 1996 and son, Duke, four years later.