who have some record of having been employed in the sanitary work of the Occupation authorities. (4) Examine any person, at all suspicious, more strictly than ever, paying a special attention to his name-card, phials, and medicine chest, made of metal. (5) Try and catch some clue concerning those who may have some business or other connections with the bank in question. (6) Ransack your memory and memoranda for some person with criminal records (especially fraud), at all resembling the devilish offender described, either in his features or in his peculiar way of committing crimes. (7) Carry out a secret surveillance over the daily habits and characteristic features of the Metropolitan health officials and such others as are engaged in sanitary works in the Metropolis / Insert: Memorandum from Director of Criminal Department, Metropolitan Police Board, to Chiefs of All Police Stations, Re: Instructions regarding Case of Killing Members of the Teikoku Bank: At approximately 15.30 today, the sixteen members of the Shiinamachi branch of the Teikoku Bank, located within the jurisdiction of the Mejiro Police Station, were asked by a man 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 First Investigative 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