Port Hope, Canada - Alice Munro, the Nobel Prize-winning author known for her mastery of the short story, has died at the age of 92, her editor said Tuesday.

Munro set her taut, acutely observed stories in the rural Ontario countryside where she grew up, focusing a stark lens on the frailties of the human condition.

Awarded the Nobel Prize in Literature in 2013 and the International Booker Prize for her body of work in 2009, Munro had suffered from dementia in recent years.

Her editor Deborah Treisman and a longtime friend, David Staines, confirmed to AFP that Munro died late Monday at her care home in Ontario.

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"She was the greatest writer of the short story form of our time. She was exceptional as a writer and as a human being," said Staines.

Canadian Heritage Minister Pascale St-Onge on X described Munro as a Canadian literary icon while Prime Minister Justin Trudeau said, "the world had lost one of its greatest storytellers."

"A true literary genius... her short stories about life, friendship, and human connection left an indelible mark on readers," he said.

Born on July 10, 1931, in Wingham, Ontario, Munro grew up in the countryside. Her father Robert Eric Laidlaw raised foxes and poultry, while her mother was a small town schoolteacher.

At age 11, Munro decided she wanted to be a writer, and never wavered in her career choice.

"I think maybe I was successful in doing this because I didn't have any other talents," she explained in an interview once.

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"I'm not really an intellectual," Munro said. "I was an okay housewife but I wasn't that great. There was never anything else that I was really drawn to doing, so nothing interfered in the way life interferes for so many people."

"It always does seem like magic to me."

Munro's first story, The Dimensions of a Shadow, was published in 1950, while she was studying at the University of Western Ontario.

She was three times awarded the Governor General's Award for fiction, first for Dance of the Happy Shades, a collection of stories published in 1968. Who Do You Think You Are (1978) and The Progress of Love (1986) also won Canada's highest literary honor.

Munro's short stories were often published in the pages of The New Yorker and The Atlantic, among others. Her last collection of work, Dear Life, appeared in 2012.