written documents were received and examined as against 908 and 60 respectively in the previous year.
Criminal Records Office
119. This office is responsible for collecting, filing and supplying the Force with information on criminals, crimes, lost or stolen property and missing and found persons. A total of 178,600 indices are held by the office.
120. The Modus Operandi Index produced 106 positive results com- pared with 37 in the previous year. A punch-card system of filing has been introduced to obtain experience in this type of work prior to the introduction of mechanized sorting.
121. 547 photographic Identification Parades were conducted and resulted in 155 identifications.
122. A new system of building up composites of the facial features of 'wanted persons', known as 'identikit' was obtained at the end of 1961. Two portraits of wanted persons have since been published in the Police Gazette and a number of others have been published as hand bills and distributed to police officers.
123. Lectures on the work of the Criminal Records Office have been given to Police officers, and officers transferred to the C.I.D. now spend the first week attached to the Criminal Records Office in order to obtain an appreciation of its value in the investigation of crime.
Prevention of Crime Office
124. The Prevention of Crime Office is responsible for applications for Deportation and Detention orders, screening of police supervisees, vetting of police recruits and the Interpol Sub-Bureau.
125. During the year 82 persons were deported from the Colony, and at the end of the year 45 persons were detained under the Emergency (Detention Orders) Regulations, 1956.
126. Since the Police Supervision Ordinance came into force in 1956 a total of 9,120 police supervision orders have been made. Of these, 1,607 are still in force. 292 new orders were issued during the year.
127. The Force continued to co-operate with the Hong Kong Dis- charged Prisoners Aid Society and other voluntary organizations in their efforts to rehabilitate supervisees after their discharge from prison. At the end of the year there were 72 supervisees under the care of voluntary organizations.
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