An aide for a South Korean lawmaker says the National Intelligence Agency told legislators today that a foreign doctor operated on Kim in September or October to remove a cyst from his right ankle.
The aide to opposition lawmaker Shin Kyung-min said the spy agency disclosed the information in a closed-door briefing.
Kim's lengthy absence from public view triggered speculation about his health. He reappeared in state media earlier this month hobbling with a cane.
It wasn't immediately clear how the spy agency obtained the information. It has a spotty track record of analysing developments in opaque North Korea.