1 / 4   New evidence of human experiments and germ war crimes by Japan's notorious Unit 731 were released by the war museum at Harbin, northeast China’s Heilongjiang Province on Friday. /Chinanews Photo

2 / 4   The new released evidence including written confessions of germ war criminals, a transportation record of human experiments, old photos of the unit soldiers and an incubator for producing plague bacillus. /Chinanews Photo

3 / 4   Unit 731 was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that undertook lethal human experimentation located in Harbin during WWII. The unit received generous support from the Japanese government up to the end of the war in 1945. /Chinanews Photo

4 / 4   Unit 731 participants of Japan attest that most of the victims they experimented on were Chinese while a small percentage were Soviet, Mongolian, Korean, and Allied POWs. Some history researchers believe that at least 10,000 Chinese and other prisoners were killed in the 731’s experiment. /Chinanews Photo