Crime novelist PD James, who penned more than 20 books, has died aged 94.
Her agent said she died "peacefully at her home in Oxford", the BBC reported.
The author's books, many featuring sleuth Adam Dalgliesh, sold millions of books around the world, with various adaptations for television and film.
Her best known novels include The Children of Men, The Murder Room and Pride and Prejudice spin-off Death Comes to Pemberley.
The author told the BBC last year she was working on another detective story and it was "important to write one more".
"With old age, it becomes very difficult. It takes longer for the inspiration to come, but the thing about being a writer is that you need to write," she said.
"I hope I would know myself whether a book was worth publishing. I think while I am alive, I shall write. There will be a time to stop writing but that will probably be when I come to a stop, too."
In a statement, James's publishers Faber and Faber said: "This is a very sad day for us at Faber.
"It is difficult to express our profound sadness at losing PD James, one of the world's great writers and a Faber author since her first publication in 1962.
"She was so very remarkable in every aspect of her life, an inspiration and great friend to us all. It is a privilege to publish her extraordinary books. Working with her was always the best of times, full of joy. We will miss her hugely."