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Jiroemon Kimura, 115, is the world's oldest living man and world's oldest living person according to Guinness World Records. (Kyotango City/Associated Press)

A 115-year-old woman who just became the world's oldest living female last month has died, says a Japanese official who lived in the same town near Tokyo as the record-holder.

Koto Okubo died Saturday at a nursing home in Kawasaki City, according to city official Mitsuhiro Kozuka. He said her relatives declined to release the cause of her death and family details.

Born Dec. 24, 1897, Okubo held her title for less than a month following the death of Dina Manfredini of the United States.

Manfredini died about two weeks after becoming the world's oldest person.

Jiroemon Kimura, a 115-year-old man in Japan's ancient capital of Kyoto, inherited that title. He was born on April 19, 1897.

The city official said Okubo had lived with one of her sons at the same nursing home.