The Hankou Incident (also rendered as Hankow Incident; Chinese and Japanese: 漢口事件 (Hankō Jiken or Kankō Jiken)) was an incident that occurred on 3 April 1927 in which rioters and a few military units entered the Japanese concession in the Chinese city of Hankou, engaged in vandalism and looting, and attacked Japanese residents and consular staff. A number of servicemen of the Imperial Japanese Navy were injured, 150 homes were damaged and the total cost of the destruction was estimated at 920,000 yen.[1] Dozens of Chinese civilians were also killed when Japanese marines fired machine guns at protestors.[2] Although some reports suggest that the incident occurred at the instigation of the Chinese Communist Party,[3] the riots were sparked by an altercation between Japanese marines and Chinese workers.