Mitsuo Kagawa (賀川 光夫, Kagawa Mitsuo; January 5, 1923 – March 9, 2001) was a Japanese archaeologist and a professor at Beppu University in Ōita Prefecture, Japan. He committed suicide by hanging himself on March 9, 2001, as a result of the Japanese Paleolithic hoax.
Source: “Mitsuo Kagawa”, English Wikipedia (CC BY-SA 4.0), excerpt