SEOUL, April 21 (Reuters) - North Korean leader Kim Jong Un is receiving treatment after undergoing a cardiovascular procedure early this month, Daily NK reported, amid speculation over Kim's health following his absence from a key anniversary event

Reuters: Daily NK, a speciality website run mostly by North Korean defectors, cited unidentified sources inside the isolated state saying Kim is recovering at a villa in the Mount Kumgang resort county of Hyangsan on the east coast after getting the procedure on April 12.

Reuters: North Korea marked the anniversary of the birthday of its founding father and Kim's grandfather, Kim Il Sung, as a national holiday on April 15, but Kim was not seen in attendance.

Reuters: Kim's health has deteriorated in recent months due to heavy smoking, obesity and overwork, the Daily NK report said.

Reuters: "My understanding is that he had been struggling (with cardiovascular problems) since last August but it worsened after repeated visits to Mount Paektu," a source was quoted as saying, referring to the country's sacred mountain.

Reuters: South Korea's Unification Ministry, which handles inter-Korean affairs, declined to comment on the report.

(random aside @ajosshi : I saw your tweet and then saw our story when I started the shift)