North Korean leader Kim Jong Il has pancreatic cancer, a news report said on Monday.
Seoul's news channel network YTN television reported Monday that Kim, 67, was diagnosed with the cancer around the time he was felled by a stroke last summer.
The report cited unidentified intelligence officials in South Korea and China.
Comments from South Korea's spy agency were not immediately available.
Kim's health is a focus of intense media speculation due to concerns about instability and a power struggle if he were to die without naming a successor.