Prince Hitachi, the uncle of Emperor Naruhito, underwent surgery for ureteral stones on Thursday and is recovering well, the Imperial Household Agency said.

File photo taken on May 29, 2017, shows Prince Hitachi, the uncle of Japanese Emperor Naruhito. The prince was hospitalized on March 1, 2023, for fever, the Imperial Household Agency said. (Kyodo) ==Kyodo

The 87-year-old prince was hospitalized at the Japanese Red Cross Medical Center in Tokyo on Wednesday evening after running a fever of around 38 C. He had been experiencing a fever of over 37 C for several days prior.

Prince Hitachi, who is the younger brother of former Emperor Akihito and third in line to the throne, serves as president of the Japan-Denmark Society, honorary president of the Japan-Sweden Society and honorary president of the Japan-Belgium Society.

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Prince Hitachi, Emperor Naruhito's uncle, hospitalized for fever