Just days after her passing at the age of 79, Diane Keaton’s cause of death has been officially disclosed. She died on October 11.

In a heartfelt announcement to People on Wednesday, Keaton’s family revealed that the beloved actress succumbed to pneumonia.

“The Keaton family is deeply thankful for the overwhelming messages of love and support they have received during this difficult time, following the loss of their cherished Diane, who passed away from pneumonia on October 11,” her family shared.

The statement also highlighted some of the passions that defined Keaton’s life, including her dedication to animal welfare.

“Her love for animals and her unwavering support for the homeless community were central to her character. Donations made in her memory to local food banks or animal shelters would be a fitting and appreciated tribute,” the family suggested.

Over the weekend, a family spokesperson confirmed the unexpected news of Keaton’s death to People, prompting an outpouring of tributes from Hollywood peers and fans alike.

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 

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

‘It was so unexpected, especially for someone with such strength and spirit,’ the insider continued. 

‘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. 

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. 

‘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.

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. 

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