Woman, 61, gives birth to her own grandchild using eggs donated by her daughter

A 61-year-old Japanese woman has given birth to her own grandchild using an egg donated by her daughter.

The surrogate mother was believed to be oldest woman to have given birth in Japan.

Surrogate births are extremely rare in Japan, and the Suwa Maternity Clinic in Nagano, northwest of Tokyo, refused to provide information such as the date of the birth or gender of the baby.

News reports said the baby was born last year.

"Both surrogate mother and baby were fine," said Chihiro Netsu, a spokeswoman for the clinic.

Netsu said the woman was believed to be the oldest surrogate mother in Japan, and news reports said she was the oldest woman to have given birth overall.