who called himself a member of the Sanitary Section of the Tokyo Metropolitan Office to swallow a liquid poison he brought which he said was a preventative against dysentery to be taken by them according to an order issued by the Occupation Forces, that ten of the victims were killed on the spot and two at the hospital, and the other four are being given medical aid but their fate is still to be seen. This crime, which was committed at the closing hour of the bank and in the assumed name of the Occupation Forces, killing many lives at one time and attempting to rob much money of the establishment, is one of the rarest and boldest crimes ever seen in the history of crimes. In view of the tremendous repercussion being shown by the public with regard to this case, we must, through cooperation of all police, take greatest possible efforts for apprehending the offender. For this reason you are asked to recognize the extraordinary importance of the case and, giving complete instructions to your subordinate officers in accordance with the following rules of investigation, make immediate report to the investigation headquarters whenever you get any data for furthering investigation and that with special care not to let the secret escape. Details of Place of the crime, Victims, Offender and Brief account of the case attached / N.B. Your speedy written report is impatiently expected at the Investigation Headquarters as soon as your task is completed /
Memorandum ends / One hundred detectives assigned to the case / My room – Room #2 (Murder Room) of the FirstInvestigative Division of the Tokyo Metropolitan Police Board – confirmed in overall charge of the investigation under my boss, Detective Inspector Minegishi / Minegishi to report to Chief Inspector Suzuki, Head of the First Investigative Division, who in turn will report directly to Tokyo Chief of Police Kita / Robbery Room detectives to aid in investigation / Divided into three
ji-dōri
questioning teams / Partnered with Detective Fukushi / Allotted Nagasaki 2-chōme / Begin questioning the neighbourhood at first light.
1948/1/27; 06.00: Fair, with northwesterly winds / Street by street, house by house, door-to-door questioning of Nagasaki 2-chōme neighbourhood with Fukushi-kun / Establish names and occupations of all residents / Establish and verify whereabouts of each resident at time of crime / Repeat description of suspect based on statements of survivors / Note down any possible sightings of men fitting description of suspect / Note down any suggestions as to identity of suspect based on description given to residents / 18.00: Requested to return to Special Investigation HQ for emergency meeting / Reports received of two similar cases / First case reported to the Marunouchi Police Station at 15.30 this afternoon by Ogawa Taizo (or Yasuzo), the manager of the Nakai branch of the Mitsubishi Bank / Case occurred at approximately 15.20 on 19 January this year at the Nakai branch of the Mitsubishi Bank at 4-chōme Shimo-ochiai, Shinjuku-ku / According to the statement by Ogawa, a man arrived at the bank as business was closing and presented the name-card: ‘Dr Yamaguchi Jiro, medical technician attached to the Anti-Epidemic section of the Welfare Ministry’ / The visitor told Ogawa that he had been sent by a Lieutenant Porter or Parker to disinfect the entire branch because money had been deposited that day by a man named Ōtani from the Kinuhara Industrial Company of 4-chōme Shimo-ochiai / The visitor said that a mass dysentery outbreak had occurred in the employee apartments of the Kinuhara Industrial Company that day (19 January) with ten patients reported so far / Ogawa asked the man if he knew the full name of this Ōtani but the man did not answer clearly / Ogawa investigated the records of the branch and found a deposit by a man named Ōtani of the Kinuhara Industrial Company / However the deposit had been a postal order for ¥65 and not cash / Ogawa presented the