More than 100 human bones, known as the Tokyo Human Bones, were found at the previous site of the Army Medical School in Tokyo, Japan, on July 22, 1989. They were located on the northern side of the previous location of the epidemic prevention research unit of the Army Medical School, with the discovery drawing a great deal of international attention. It was suggested that these bones might be from the victims of human experiments during World War II. It was found, in 1991, by Professor Sakura Shuo in Sapporo University, that the time and location of the burial of these bones was consistent with the existence of the Army Military Medical School. Most of these bones were Chinese, Korean and Mongolian races, and they were indeed closely related to the war. At the time they had not been found to be directly related to the human experiments of the Army Medical School, but the evidence left behind on the bones did not indicate gunshot or other war wounds, but evidence of medical experiments. This incident was known as the "Tokyo Bone Incident". Based on the research data on the Tokyo Human Bones internationally in the past 30 years, in particular, the testimony from the staff of the previous Army Medical School in Tokyo and members of the previous Army Medical School in Harbin (Unit 731), it can be concluded that some relationship exists between the Tokyo Human Bones and human experiments. This suggested that the nature of research related to these human bones conducted by the Army Medical School in Tokyo was consistent with those conducted at the Army Medical School in Harbin (Unit 731).
1989年7月22日,建筑施工队在日本东京陆军军医学校旧址施工时发现100多具人骨,该发现地正是在与七三一部队关系密切的陆军军医学校防疫研究室北侧,此事件引起日本国内及国际社会关注,并推测这些人骨可能为人体试验受害者。1991年经札幌大学佐仓朔教授鉴定,得出结论:“这些人骨掩埋的时间与原陆军军医学校存在时期一致,多为亚洲的中国、朝鲜蒙古系人种,确与战争有着密切关联,未发现与七三一部队人体试验有直接关系,但留有的人骨痕迹证明死者绝非因枪伤等战伤死亡,而是医学实验。”这一事件被称为“东京人骨事件”。通过梳理近30年国内外东京人骨相关研究资料,结合前陆军军医学校职员、七三一部队成员证词等,挖掘人骨发现地与七三一部队机构之间的联系,本文认为这些人骨虽无法被直接贴上“马路大”的标签,但有间接证据可以证明其与“马路大”有着某种关联。.