Sugamo Prison
On 23 December 1948, Hideki Tojo, Kenji Doihara, Akira Mutō, Iwane Matsui, Seishirō Itagaki, Kōki Hirota, and Heitaro Kimura were hanged at Sugamo Prison by the U.S. occupation authorities in Ikebukuro in Allied-occupied Japan for war crimes, crimes against humanity, and crimes against peace during the Asian-Pacific theatre of World War II.