Hiroko Nagata

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Hiroko Nagata
Hiroko nagata.jpg
Nagata in an undated photo
Born February 8, 1945
Tokyo, Japan
Died February 5, 2011(2011-02-05) (aged 65)
Tokyo, Japan
Occupation Leftist radical
Criminal charge Murder
Criminal penalty Death
Criminal status Deceased
In this Japanese name, the family name is Nagata.

Hiroko Nagata (永田 洋子 Nagata Hiroko?, February 8, 1945 – February 5, 2011[1]), sometimes mistakenly referred to as Yōko Nagata, was a Japanese leftist radical who was convicted of murder and sentenced to death in Japan. Nagata was convicted of murdering, or participating in the murder of, fellow members of the United Red Army (URA) during a group purge in Gunma prefecture, Japan in February 1972.

During the purge, Nagata, acting as vice-chairman of the URA, directed the killing of 12 members of the group by beatings or by forced exposure to frigid winter air temperatures. A URA non-member who was present during the purge was also killed. Arrested on February 16, 1972, Nagata was tried and convicted for her participation in the killings, and was sentenced to death. While awaiting execution, Nagata died from brain cancer on 5 February 2011 at the Tokyo Detention House.


Nagata was born in Tokyo and, after graduation from Chofu Gakuen High School, entered Kyoritsu College of Pharmacy (defunct in 2008 and merged into Keio University) to receive training to be a pharmacist. During her time in college, Nagata became involved full-time in left-wing politics, eventually becoming vice-chairman of the United Red Army. Nagata would work herself into what was described as an "hysterical rage" when excited, usually over political issues. She was described as physically unattractive and was (by the standard of medicine of that time) infertile from Basedow syndrome. She was particularly harsh with other female members of her group.[2]

Purge incident[edit]

Japan's leftist student movement in the 1960s pervaded Japan's universities, and, by late in the decade, had become balkanised, competitive, and violent. After a series of incidents in which leftist student groups attacked and injured or killed law enforcement officials as well as the general public, Japan's national police agency cracked down on the student groups, raiding their hideouts and arresting dozens in 1971 and 1972. Attempting to escape from the police, a core group of radicals from the URA, including Nagata, retreated to a compound in the mountains of Gunma Prefecture during the winter of 1972.[3]

In the second week of February 1972 at the compound, URA's chairman Tsuneo Mori and Nagata initiated a violent purge of the group's members. In the purge, Nagata and Mori directed the beating deaths of eight members and one non-member who happened to be present. Six other members were tied to trees outside, subsequently freezing to death in the extremely cold weather. Nagata especially targeted group members who, in her opinion, "took too much interest in relations with women and did not devote enough ardour to the revolution." A few were killed for "attempting to escape"; one member was killed for asking for some tissue paper while inside his sleeping bag, an act that Nagata apparently construed as having a sexual significance.[4]

On February 16, police arrested Mori, Nagata, and six other URA members at the compound or at a nearby village. Five others, armed with rifles and shotguns, managed to escape, fleeing on foot through the mountains towards Karuizawa in nearby Nagano prefecture, eventually taking refuge in a mountain guest lodge, initiating the Asama-Sansō incident.[5]

Criminal trial, sentence, illness, and death[edit]

Hiroko Nagata was sentenced to death in the Tokyo District Court on June 18, 1982. On September 26, 1986, the Tokyo High Court upheld her death sentence. On February 19, 1993, the Supreme Court of Japan upheld her death sentence. Nagata submitted a plea for a retrial, which was declined by the courts on November 28, 2006.[6]

Nagata wrote several books during her time in prison and attracted the attention of a support group. Nagata's supporters reported that she had suffered from declining health, including a brain tumor, for several years which had gone untreated.[6] She underwent surgery for a brain tumor in 1984. Nagata collapsed from brain atrophy in 2006 and was transferred to a medical prison in Hachioji. She returned to the Tokyo Detention House in 2007, but was bedridden.[7]

On October 11, 2008, it was revealed that Nagata had fallen into a critical condition due to the tumor, so her family was called for visitation to the Tokyo Detention Center.[8] Nagata died on 5 February 2011.[7]


  1. ^ "Condemned '70s radical Nagata dies", The Japan Times, 7 February 2011
  2. ^ Schreiber, p. 201.
  3. ^ Nakamura, "'We did not leave anything positive,' says ex-radical", Schreiber, p. 198-201.
  4. ^ Schilling, "The final days of revolutionary struggle in Japan", Nakamura, "'We did not leave anything positive,' says ex-radical", Kyodo, "Wanted radical Kunio Bando was in Philippines in 2000: sources", Kyodo, "Court dismisses death-row inmates' translation appeals", Schreiber, p. 201.
  5. ^ Schilling, "The final days of revolutionary struggle in Japan", Nakamura, "'We did not leave anything positive,' says ex-radical", Kyodo, "Wanted radical Kunio Bando was in Philippines in 2000: sources", Kyodo, "Court dismisses death-row inmates' translation appeals", Schreiber, p. 201–202.
  6. ^ a b Kyodo, "Court dismisses death-row inmates' translation appeals", Schreiber, p. 217.
  7. ^ a b Kyodo News, "Condemned '70s radical Nagata dies", Japan Times, 7 February 2011, p. 2.
  8. ^ 永田洋子死刑囚が危篤 連合赤軍事件 (in Japanese). Sankei Shimbun. 2008-10-11. Archived from the original on October 19, 2008. Retrieved 2008-10-12. 



  • Schreiber, Mark (1996). Shocking Crimes of Postwar Japan. Tuttle Publishing. ISBN 4-900737-34-8.