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

Her family issued an emotional statement to People on Wednesday to share the late actress passed away from pneumonia.

‘The Keaton family are 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,’ her loved ones expressed.

They also offered insight into what the Hollywood icon had been dedicated to, including her love for animals.

‘She loved her animals and she was steadfast in her support of the unhoused community, so any donations in her memory to a local food bank or an animal shelter would be a wonderful and much appreciated tribute to her.’

Over the past weekend on Saturday, a family spokesperson confirmed Keaton’s shock passing to People – sparking a wave of tributes from fellow Hollywood stars and fans.

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Diane Keaton’s cause of death has been revealed just days after her passing at the age of 79 on October 11; seen in 2022 in Hollywood

On Wednesday, a longtime friend of the Oscar-winning actress told TMZ that the Something’s Gotta Give and Father of the Bride star had been ill for a while.

The insider said that Keaton had been battling an unnamed ill ness prior to her passing and so her death was ‘not a shock.’

A friend close to Keaton had previously told People that the star’s health had ‘declined very suddenly’ and was ‘heartbreaking for everyone who loved her.’

‘In her final months, she was surrounded only by her closest family, who chose to keep things very private. Even longtime friends weren’t fully aware of what was happening.’

Keaton’s final moments were also laid bare in a chilling 911 call that was placed on early Saturday morning.

In a recording obtained by TMZ, a dispatcher could be heard calling for the Los Angeles Fire Department to respond to reports of a ‘person down’ at Keaton’s residence around 8a.m.

The Godfather actress had been transported to a nearby hospital by ambulance where she was later pronounced dead.

A close friend of the late Oscar winner – songwriter Carole Bayer Sager – also recalled how thin Keaton had gotten before her death.

‘I saw her two or three weeks ago, and she was very thin. She had lost so much weight,’ Sager expressed to People.

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Her family issued an emotional statement to People on Wednesday to share the late actress passed away from pneumonia; seen in 2019 in L.A.

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‘The Keaton family are 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,’ her loved ones expressed; seen with kids Duke and Dexter in 2018

It was also revealed by Keaton had been affected by the devastating L.A. wildfires earlier this year in January.

‘She had to go to Palm Springs because her house has been damaged inside and they had to clean everything.’

Sager added, ‘She was down there for a while, and when she came back, I was kind of stunned by how much weight she’d lost.’

Keaton was described by her friend as ‘a magic light for everyone.’

‘I just loved her. She was so special, she just lit up a room with her energy,’ Sager further told the outlet.

Another revelation coming out in the wake of Keaton’s passing is that her former boyfriend and costar Al Pacino had harbored a lifelong regret of not marrying Keaton when he had the opportunity.

‘Looking back, Al admits the love of his life was Diane who he’s always called, “an amazing woman,”‘ a confidante of the Oscar-winning actor told Daily Mail Saturday.

The friend added of Pacino, 85, ‘I know he will forever regret he didn’t make his move when he had the chance’ during the former duo’s time together from 1971 to 1987.

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Sager added, ‘She was down there for a while, and when she came back, I was kind of stunned by how much weight she’d lost’; seen in 2018 in L.A.

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Another revelation coming out in the wake of Keaton’s passing is that her former boyfriend and costar Al Pacino had harbored a lifelong regret of not marrying Keaton when he had the opportunity; Pacino and Keaton seen in NYC in 1989

‘For years after he and Diane split, Al used to say, “if it’s meant to be, it’s never too late for a do-over.” But sadly, now it is.’

Keaton’s death was followed by emotional statements from Hollywood stalwarts such as Leonardo DiCaprio, Bette Midler, Francis Ford Coppola and a host of others.

DiCaprio called the Oscar-winning star ‘brilliant, funny and unapologetically herself,’ adding that ‘she will be deeply missed.’

Midler said of Keaton, ‘She was hilarious, a complete original, and completely without guile, or any of the competitiveness one would have expected from such a star. What you saw was who she was…oh, la, lala!’

The Godfather director Coppola said in an Instagram post, ‘Words can’t express the wonder and talent of Diane Keaton,’ adding, ‘Endlessly intelligent, so beautiful…Everything about Diane was creativity personified.’

The actress leaves behind an amazing legacy in Hollywood, with some of her performances in the 1970’s hailed as the decade’s best.

They included the titular role in the 1977 comedy Annie Hall, which was written and directed by Woody Allen, who she collaborated with on a number of memorable projects.

Allen has reportedly been left ‘distraught’ over Keaton’s passing following their past work collaborations and romantic relationship.

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Keaton’s death was followed by emotional statements from Hollywood stalwarts such as Leonardo DiCaprio, Bette Midler, Francis Ford Coppola and a host of others; seen in 2017 in Hollywood

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The actress leaves behind an amazing legacy in Hollywood, with some of her performances in the 1970’s hailed as the decade’s best; seen in 1987 in Canada

Keaton in 1978 would claim the Best Actress in a Leading Role award for her work in Annie Hall, her first of four lifetime nominations.

She would also receive nods for her work in movies such as 1981’s Reds, 1996’s Marvin’s Room and 2003’s Something’s Gotta Give.

Other notable movies Keaton performed in throughout her decades-long career included 1987’s Baby Boom; 1996’s The First Wives Club; and the Father of the Bride films in 1991 and 1995.

The late actress’s last major public outing was earlier this year in April when she attended a birthday celebration for Jack Nicholson.

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Allen has reportedly been left ‘distraught’ over Keaton’s passing following their past work collaborations and romantic relationship; the pair seen in 1973 in the film Sleeper

Fellow actor Ed Begley Jr. had been in attendance at the bash and told People, ‘I saw her fairly recently at Jack Nicholson’s birthday party, and it was good to see her there.

‘She’s a wonderful actress, a wonderful lady. I played her brother in an HBO film called Running Mates with Ed Harris. So I’m glad I knew her these many years.’

Begley added that Keaton, ‘loved Jack Nicholson, as I do, and Jack loved her. So I don’t mean to speak for him. I’m sure he’s as devastated as I am by her loss.’

Keaton never married but adopted two children in her 50s: daughter Dexter and son Duke.