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The is a bureau of the Tokyo Metropolitan Police Department in charge of public security with jurisdiction over Tokyo metropolis. It has a force of more than 2,000 officers. In the Japanese police organization, only the Metropolitan Police Department becomes "the bureau" where the security police branch becomes independent. In other prefectural police forces, the Public Security Section and Foreign Affairs Division are installed in a Security Department. Tokyo is seen as an exception since it had been working with the Japanese National Police Agency for the longest time since they share the same location.〔(【引用サイトリンク】title=Japanese Police )〕 The PSB is not a Japanese version of Federal Bureau of Investigation, despite some claims that it is.〔(【引用サイトリンク】title=JAPANESE POLICE STILL HAVE TROUBLE WITH LEFTIST RADICALS )〕 It does not concern with ordinary criminal activities. It main focus is activities which threaten national security and therefore, the purpose is much similar to MI5. However, unlike MI5, it is operated entirely by police officers. ==PSB cases== *The PSB had been mobilized to investigate all Aum Shinrikyo facilities after the deadly sarin gas attack on the Tokyo subway. Following the discovery of an Aum cultist who had been employed by the Japanese Maritime Self-Defense Forces after sensitive military information had been leaked out, the PSB had investigated the matter.〔(【引用サイトリンク】title=Aum Shinri-kyo Updates (CESNUR) - April 10-17, 2000 )〕 The PSB had been the leading agency to investigate reports that Aum Shinrikyo had acquired names of 3,000 Honda executives and sensitive data from government ministries and other important facilities via Aum-created software. *An ex-Japanese Air Self-Defense Forces warrant officer had been investigated by the PSB for divulging military secrets under the Mutual Defense Assistance Agreement to a Russian GRU operative, who was identified as Aleksei Shchelkonogov. * Three activists of the Tachikawa Jieitai Kanshi Tentomura had been said to be prisoners of conscience by Amnesty International when they had arrested by police with the PSB investigating them for conducting anti-war activities after illegally entering an SDF housing complex in Tachikawa. *PSB agents had been involved in the arrest of former Cabinet Intelligence and Research Office official Toshihiko Shimizu, accused of providing classified data to a Russian embassy official, supposedly posing as a diplomat,〔(【引用サイトリンク】title=Papers sent to prosecutor on Japanese intelligence official, Russian 'spy' over information leak )〕 under the National Public Service Law.〔 *The PSB had failed in securing a Russian man wanted for spying in Japanese territory as a suspected agent of the SVR since the 1960s when he left Japan in 1995 and reentered the country several times before being unaccounted for when the spy used a Japanese name to obtain a Japanese passport in Vienna.〔(【引用サイトリンク】title=LEAD: Police send papers on man alleged to have spied for Russia for 30 yrs+ )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tokyo Metropolitan Police Department Public Security Bureau」の詳細全文を読む スポンサード リンク
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