LOS ANGELES — The family of Diane Keaton has announced the cause of death for the acclaimed actress, who was 79, to People Magazine on Wednesday.

In their statement, the family confirmed that Keaton passed away due to pneumonia.

“The Keaton family deeply appreciates the overwhelming outpouring of love and support during this difficult time. Diane, cherished by many, succumbed to pneumonia on October 11,” the statement said.

Known for her iconic roles in films such as “Annie Hall,” “The Godfather” series, and “Father of the Bride,” Keaton left an indelible mark on cinema.

Emergency responders from Los Angeles Fire Department were called to her residence and transported her to a local hospital, where she ultimately passed away.

As of now, no public memorial services have been scheduled.

The unexpected news was met with shock around the world. Keaton was the kind of actor who helped make films iconic and timeless, from her “La-dee-da, la-dee-da” phrasing as Annie Hall, bedecked in that necktie, bowler hat, vest and khakis, to her heartbreaking turn as Kay Adams, the woman unfortunate enough to join the Corleone family.

Keaton won her first Oscar for “Annie Hall” and would go on to be nominated three more times, for “Reds,” “Marvin’s Room” and “Something’s Gotta Give.”

In her very Keaton way, upon accepting her Oscar in 1978 she laughed and said, “This is something.”

Keaton was born Diane Hall in January 1946 in Los Angeles, though her family was not part of the film industry she would find herself in. Her mother was a homemaker and photographer, and her father was in real estate and civil engineering.

The Associated Press contributed to this report.