www.npa.go.jp/about/overview/sikumi.html

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警察のしくみ｜警察庁Webサイト

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https://www.npa.go.jp/about/overview/sikumi.html

About this page

This page provides an overview of the structure of the police in Japan, detailing the evolution and organization of the police force since its inception in 1874. Initially managed by the Ministry of Internal Affairs, the police underwent significant reforms post-World War II with the establishment of the Police Act in 1948, leading to the current system headed by the National Public Safety Commission and the National Police Agency. The agency supervises the prefectural police forces, which include various police stations and units. The page outlines the roles and responsibilities of the National Police Agency, including criminal investigations, public safety, and organizational crime prevention. It also describes the internal departments and functions within the agency as well as the structure of local police oversight by prefectural public safety commissions. Overall, it presents a comprehensive view of the organization and functioning of the police system in Japan.