Public Security Intelligence Agency
Agency overview
FormedJuly 21, 1952; 71 years ago (1952-07-21)
Preceding agencies
  • Investigation Bureau (IB), Home Ministry (1946)[1]
  • Internal Affairs Bureau (IAB), 2nd Office (1948)[1]
  • Special Investigation Board (SIB), Attorney General's Office (1948-1949)[4][5]
JurisdictionGovernment of Japan
HeadquartersChiyoda, Tokyo, Japan
Employees+/- 1,740 officers (As of 2020)[2]
Annual budget13,256,000,000 Yen (As of 2022)[3]
Minister responsible
Agency executive
  • Masaki Wada, Director-General
Parent agencyMinistry of Justice
WebsiteOfficial Site (in Japanese)

The Public Security Intelligence Agency (公安調査庁, kōanchōsa-chō) is the domestic intelligence agency of Japan. It is administered by the Ministry of Justice and is tasked with internal security and espionage against threats to Japanese national security based on the Subversive Activities Prevention Act and the Act Regarding the Control of Organizations Which Committed Indiscriminate Mass Murder.[6][7] Any investigation conducted by the agency needs to go through the Public Security Examination Commission (PSEC) in order to determine if there is a justification to investigate and clamp down on an organization's activities.[8]

As the national agency with the role to collect intelligence information, the PSIA contributes to Japanese government policy by providing relevant organizations with necessary foreign and domestic data (collected through investigations and intelligence activities) on subversive organizations.[6]

The PSIA's findings are released publicly through the annually-published Naigai Jousei no Kaiko to Tenbo (Situation in Public Security inside and outside Japan and their prospect) as well as regularly-published Kokusai Terrorism Youran (International Terrorism Report).[8]

In recent years, the PSIA is eyed as the basis for the creation of a new foreign intelligence agency.[9]


PSIA officers inspect a suspected Aum Shinrikyo building in 2012.

The Public Security Intelligence Agency was established with the enforcement of the Subversive Activities Prevention Law on 21 July 1952.[7][1] The PSIA took over the role of the SIB, which was established by the Allied Forces during the occupation.[5] Most of the recruits came from the disbanded Tokumu Kikan and led by officials from the pre-occupation Ministry of Justice.[5]

Initially focusing on threats from far left groups such as the Japanese Red Army during the days of the Cold War, it began to conduct intelligence work on the Aum Shinrikyo after the Sarin gas attack on the Tokyo subway in 1995,[6] with criticism that the PSIA did not monitor the group, especially with their attempt to acquire and stockpile biological weapons on Japanese soil.[10] The PSIA had cooperated with the Tokyo Metropolitan Police Department Public Security Bureau in investigating Aum Shinrikyo for a number of years. When asked about their investigation on the cult, a PSIA report had said "There has been no change in its dangerous nature. Strict surveillance is essential."[11]

The PSIA had investigated Aum Shinrikyo when it was revealed that the group had established software firms that could pose security risks to Japan.[12]

Chongryon has been under PSIA surveillance for a long time, suspecting it of supposedly performing espionage activities in Japanese soil.[13] The Ministry of Justice has sought ¥270 million to fund the PSIA on conducting intelligence against North Korean espionage activities.[14] Its facilities were also raided by the PSIA while sentencing for its leaders were underway in 2004.[15]

The PSIA had been supposed to be integrated with Naicho in order to reorient the agency to a post-Cold War and to enhance its resources in the 1990s, but the proposal was not adopted.[10]

An investigation into French Al-Qaeda terrorist Lionel Dumont had been the responsibility of the PSIA in 2004 based on rumors that he was supposed to establish a Japanese Al-Qaeda cell.[16] The PSIA raided the headquarters of Fumihiro Joyu's Hikari no Wa on May 10, 2007.[17] Despite insistence from Joyu that his group had ended ties with Aum Shinrikyo, PSIA officials have warned that his group has ties to Shoko Asahara after conducting raids.[18]

In the wake of Kim Jong-il's death in 2011, the PSIA reported that they are undertaking intelligence work on North Korea by conducting intelligence work towards Chongryon, as they had remitted money and gifts to North Korea before sanctions were imposed.[19]

In 2015, the PSIA offered university students a one-day immersion to work alongside veteran PSIA officers.[20]

On July 14, 2016, the PSIA sent officers to Sapporo to investigate Aleph's Shiroshi Ward facility under the Act on the Control of Organizations Which Have Committed Acts of Indiscriminate Mass Murder.[21]

In January 2017, Okinawa press reported that the PSIA has conducted investigation into pro-Okinawan independence and anti-USFJ bases activist groups for potential links to China.[22]

In December 2019, an anti-Aum Shinrikyo video was created by the agency in order to raise public awareness that the group is still a threat to public safety.[23]

On April 9, 2023, the PSIA launched a division dedicated to economic security and protect sensitive technology from being taken out of Japanese soil.[24] Investigation offices for economic security and cybersecurity under its second investigation department were established in April 2022.[24]

On April 21, 2023, Hideji Suzuki, the former director of a Japan-China youth exchange association, suggested that the PSIA has a pro-Chinese mole that was behind his arrest in China for allegations of spying.[25] MSS agents showed him photos that were likely taken from PSIA IDs.[25]


While the PSIA is known to conduct its operations on domestic soil,[10] there are suggestions that they have conducted limited operations overseas.

In the 2000s, the PSIA was reported to have conducted undercover operations at the Chinese-North Korean border by distributing flyers to locals in obtaining information regarding Japanese nationals abducted by North Korea.[26]

In 2003, it was reported that the PSIA had a mole inside Aum Shinrikyo by the name of Kazumi Kitagawa, who joined the cult after the sarin gas attack in the Tokyo Metro; she later tried to seek asylum in North Korea.[27] She revealed to Aum about her work in the PSIA and her plans to cut ties with them after she accused a PSIA officer of raping her.[27]

From 2005 to 2016, reports of Japanese nationals being arrested throughout China for taking photos of sensitive installations or conducting illegal activities under cover of legal occupations suggests that the PSIA has recruited expats working/living in China to conduct limited HUMINT ops.[22] These allegations have never been officially confirmed.[26]

According to a National Police Agency official, the PSIA has done a bad job in China if reports do prove that the expats arrested were covertly recruited by the agency.[28]


The PSIA is formed with the current organization:[29]

Foreign ties

The PSIA has ties to several foreign intelligence security agencies, including the CIA, FBI, Mossad, RAW and MI6, with several PSIA agents being invited to train with the CIA under its Intelligence Analysis Course.[6]

In October 2018, Chen Wenqiang, head of the Ministry of State Security, visited the PSIA in order to collaborate on antiterrorism activities prior to the 2020 Tokyo Olympics.[28]

Known Directors-General of PSIA


The PSIA has faced criticism in the past for being ineffective, in part because it has little ability to act without approval from the PSEC, an ad hoc body that meets only when required. According to Philip H.J. Davies and Kristian Gustafson, the PSIA operates similarly to the British security agency MI5[34] since officers have no rights to arrest anyone during a law enforcement operation nor force anyone to be involved in an investigation.[8]

The criticism was especially made after public discovery that the agency did not move against Aum Shinrikyo.[10] Due to the strict legal framework surrounding the agency it had not been given permission to monitor the organization directly until 2000, despite having requested permission from the PSEC in 1996.[8]


  1. ^ a b c "公安調査庁とは" (in Japanese). Japanese Ministry of Justice.
  2. ^ "法務省定員規則 | e-Gov法令検索".
  3. ^
  4. ^ Wildes 1953, p. 667.
  5. ^ a b c "Intelligence in the New Japan — Central Intelligence Agency". Archived from the original on March 12, 2008.
  6. ^ a b c d Public Security Investigation Agency. Retrieved on January 5, 2008.
  7. ^ a b HISTORICAL BACKGROUND, Official PSIA Webpage. Archived 2007-09-27 at the Wayback Machine Retrieved on January 5, 2008.
  8. ^ a b c d e f [bare URL PDF]
  9. ^ "Japan eyes MI6-style spy agency as it seeks to shed pacifist past". Reuters. March 6, 2015 – via
  10. ^ a b c d Japan's Growing Intelligence Capabilities, Andrew Oros. Archived 2009-03-20 at the Wayback Machine Retrieved on June 9, 2008.
  11. ^ "JAPANESE OFFICIALS FEAR RESURGENCE OF AUM SHINRI KYO CULT". Archived from the original on May 9, 2008.
  12. ^ "Aum Shinri-kyo Updates (CESNUR) - April 10-17, 2000".
  13. ^ Shimizu, Kaho (July 10, 2007). "Chongryun never gets out from under a cloud". Japan Times Online.
  14. ^ "Japan Primer". University of Texas. 2007. Archived from the original on 2008-06-25. Retrieved 2007-10-06.
  15. ^ "Aum locations searched in runup to guru's verdict". Japan Times Online. February 17, 2004.
  16. ^ "Al-Qaeda agent lived quiet life in Niigata | the Japan Times". Archived from the original on 2016-03-24.
  17. ^ Cult group of former Aum official inspected by public safety agency. Retrieved on May 10, 2007.
  18. ^ Hongo, Jun (November 22, 2011). "Last trial brings dark Aum era to end". Japan Times Online.
  19. ^ "Japan Raises Info-Gathering Activities in Response to Kim Jong-il's Death". Archived from the original on 2017-09-17. Retrieved 2020-03-23.
  20. ^ Osumi, Magdalena (July 1, 2015). "Japan's spy service offers students one-day immersion course in tradecraft". Japan Times Online.
  21. ^ "Aum successor group set up new facility in Sapporo: intelligence agency". Japan Times Online. July 14, 2016.
  22. ^ a b Samuels 2019, p. 219.
  23. ^ "Japan security agency creates video on Aum atrocities|Arab News Japan".
  24. ^ a b "Japan launches new intel division for economic security". 9 April 2023.
  25. ^ a b "China has spy in Japan intelligence agency, ex-detainee suggests in book". Mainichi Daily News. 20 April 2023.
  26. ^ a b Samuels 2019, p. 218.
  27. ^ a b Matsubara, Hiroshi (November 6, 2003). "Woman who fled to North Korea was government mole in Aum". Japan Times.
  28. ^ a b Samuels 2019, p. 220.
  29. ^ "ORGANIZATION, Official PSIA Webpage". Archived from the original on September 27, 2007.
  30. ^ Dover, Goodman & Hillebrand 2014, p. 203.
  31. ^ "障害者選考試験第2次選考(採用面接)の御案内 | 公安調査庁". Archived from the original on 7 March 2019. Retrieved 12 January 2022.
  32. ^ Chongryun HQ sold to ex-intelligence head | The Japan Times
  33. ^ a b Chongryun Tokyo HQ sale seems set to fail | The Japan Times
  34. ^ Davis & Gustafson 2013, p. 185.