At the age of 61, when he suffered from laryngeal cancer, he refused to be treated by a doctor and heated a hook-shaped wire until it turned bright red.
On April 22, 2015, North Korea's Korean Central News Agency reported that, "The remains of former Chongryon executives were enshrined in the Patriotic Martyrs' Cemetery.
"[4] It is speculated that Nakamura may have (knowingly or unknowingly) trained a Kyeok Sul Do instructor in Karate at Chongryon, who would have later returned to North Korea with the knowledge.
[citation needed] Karatedo Kendokai is a karate organization headquartered in Ikebukuro, Toshima-ku, Tokyo.
The founder, Nakamura, handed over the chairman to his high-ranking younger brother Kei Ishiyama in 1997, and was instructing the entire society as a general teacher until his death in 2013.