According to the written confession of Tetsuichi Uetsubo from May to July 1954, he was born in Kagoshima Prefecture, Japan in 1902. In May 1933, he went to north China to take part in the Japanese War of Aggression against China. He was colonel and captain of the Japanese Military Police in Jining, Dong'an and Siping. He was arrested by the Soviet Army on 24 August 1945.
From August 1944 to February 1945: "ordered my subordinate unit commanders to arrest 9 underground anti-Japanese operators (whose names could not be remembered) in Jining, Pingyang and Dong'an regions; after interrogation with torture, 8 of them were sent in special transfer to Ishii Unit through the Secret Service of Harbin";
From September to October 1944: an arrested Chinese people (a Soviet spy) "was treated in 'special transfer'""sent to the military police in Harbin, which then sent him to Ishii Unit"; "the instruction on 'special transfer' was: applications should be made to the military police commander for 'those important spy-related (ideology) criminals and those with no potentials for future use to be sent in 'special transfer' to the military police in Harbin upon permission and order from the commander', and the military police in Harbin would send them to Ishii Unit for bacteriological research and experiment, that was what I heard from the chief of War Affairs Division of the Harbin Military Police";
November 1944: ordered Boli Detachment to arrest about 90 anti-Japanese underground operators, in April 1945, "sent 10 of them (whose names could not be remembered) in special transfer to Ishii Unit through the Secret Service in Harbin";
Early April 1945: sent 8 anti-Japanese people, who had been captured by Pingyang Detachment, "in 'special transfer' to the military police in Harbin, which then sent these people to Ishii Unit";
May 1945: sent 2 anti-Japanese people, arrested by Boli Detachment, "in special transfer to Ishii Unit";
"The above-mentioned Chinese people arrested during my terms as captain in Jining and Dong'an were all anti-Japanese patriots. I sent most of them to Ishii Unit to be used in the most inhuman bacteriological experiments";
"When I served as military police captain in Jining and Dong'an, I ordered my subordinate military policemen to arrest anti-Japanese underground operators. More than 150 were interrogated with severe torture. Among them, 44 were sent in special transfer to Harbin Ishii Unit and another 2 died in the interrogation with torture"; "There was indeed still a considerable number of cases which had not been confessed."