The Amakasu Incident occurred on September 16, 1923, in the chaos immediately following the Great Kantō earthquake, in Japan. Fearing that anarchists would take advantage of the disaster to overthrow the government, a squad of military police led by Lieutenant Amakasu Masahiko arrested Ōsugi Sakae, Itō Noe, and Ōsugi's six-year-old nephew. They were later beaten to death and their bodies thrown into a well. The killing of such high profile anarchists, along with a young child, became known as the Amakasu Incident, and sparked surprise and anger throughout Japan.