Kiyoshi Okubo

Watanabe Kyoshi, Tanigawa Ivan

  Active for 1 year
(1971) in Japan

8

CONFIRMED
VICTIMS

8

POSSIBLE
VICTIMS
Jump to:
  1. Summary
  2. Serial Killer Profile
  3. Serial Killer Type
  4. General Information
  5. Characteristics
  6. Childhood
  7. Cognitive Ability
  8. Incarceration
  9. Death
  10. 9 Timeline Events
  11. Serial Killers Active During Spree
  12. Boolean Statistical Questions
  13. 9 Books About Kiyoshi Okubo
  14. 4 External References
  15. Internal References

Kiyoshi Okubo a Japanese serial killer known as Watanabe Kyoshi and Tanigawa Ivan. Okubo raped and murdered eight women aged 16 to 21 in 1971. He was recently released from prison for previous rape charges. A brother of one of his victims located and turned Okubo's whereabouts to the police, his arrest followed. Kiyoshi Okubo was sentenced to death by hanging and executed in 1976.

Kiyoshi Okubo Serial Killer Profile

Serial Killer Kiyoshi Okubo (aka) Watanabe Kyoshi, Tanigawa Ivan, was active for 1 year in 1971, known to have ( 8 confirmed / 8 possible ) victims. This Serial Killer was active in the following countries: Japan

Kiyoshi Okubo was born on January 17th 1935 in Takasaki, city in Gunma Prefecture, Japan. He was born 7th of 8 children and raised by both parents. Ōkubo was raised as a middle child and had two older brothers, four younger sisters and one older sister. His father, a Japanese man who worked as an engineer of the National Railways. His mother, a half Russian, half Japanese woman. During his education he had academic, social or discipline problems, including being teased or picked on.

Ōkubo a heterosexual male citizen of Japan. Ōkubo completed 9 years of school, no degree received. Ōkubo married. He had two children, one son and one daughter.

Prior to his spree he had commited crimes, served time in jail, and served time in prison.

In 1971 (Age 35/36) Kiyoshi Okubo started his killing spree, during his crimes as a serial killer he was known to strangle, rape, and murder his victims. He was known to kill victims at his own home. At the time of his crimes he was living with himself, recently released from prison, at a house in Maebashi City, where Ōkubo was known to work as a poet, serial killer.

He was arrested on May 14th 1971 (Age 36), convicted on February 22nd 1973 (Age 38), sentenced to death by hanging at Kosuge Detention Center in Katsushika, Tokyo, Japan. Ōkubo was convicted on charges of murder and other possible charges during his lifetime. Kiyoshi Okubo was executed on January 22nd 1976 (Age 41).

Kiyoshi Okubo died on January 22nd 1976 (Age 41), cause of death: capital punishment, executed by hanging at Kosuge Detention Center in Katsushika, Tokyo, Japan.

Profile Completeness: 98%
serial killers by profile completeness

Kiyoshi Okubo has been listed on Killer.Cloud since November of 2016 and was last updated 4 months ago.

Kiyoshi Okubo a known:

Kiyoshi Okubo
Serial Killer Profile:

Updated: 2019-05-13 Collected by Killer.Cloud
General Information
Name: Kiyoshi Ōkubo
Nickname: Watanabe Kyoshi, Tanigawa Ivan
Victims: 8 - 8
Years Active: 1971 - 1971
Ages Active: 35/36 - 35/36
Active Countries: Japan
Convicted Of: murder
Life Span: 1935 - 1976
Characteristics
Gender: Male
Citizenship: Japan
Sexual Preference: heterosexual
Astrological Sign: Capricorn
Dec 22 - Jan 20
Birth Month: January
Marital Status: married
Children: two children, one son and one daughter
Living With: himself, recently released from prison, at a house in Maebashi City
Occupation: poet, serial killer
Childhood Information
D.O.B.: Jan 17, 1935
Native Name: 大久保清
Family Name: Ōkubo
Given Name: Kiyoshi
Birth Location: Takasaki, city in Gunma Prefecture, Japan
Birth Order: 7th of 8
Siblings: two older brothers, four younger sisters and one older sister
Rasied By: both parents
Birth Category: middle child
Mother: a half Russian, half Japanese woman
Father: a Japanese man who worked as an engineer of the National Railways

Cognitive Ability
IQ: N/A
Highest School: 9 years of school
Highest Degree: no degree received

Incarceration
Arrested: May 14, 1971 (Age 36)
Convicted: Feb 22, 1973 (Age 38)
Sentence: death by hanging
Prison Location: Kosuge Detention Center in Katsushika, Tokyo, Japan
Executed: Jan 22, 1976 (Age 41)
Previous Crimes: TRUE
Previous Jail: TRUE
Previous Prison: TRUE

Death Information
Death Date: Jan 22, 1976 (Age 41)
Manner of Death: capital punishment
Cause of Death: executed by hanging
Death Location: Kosuge Detention Center in Katsushika, Tokyo, Japan
Killed In Prison: FALSE
Suicide: FALSE
9 Timeline Events of Serial Killer
Kiyoshi Okubo

The 9 dates listed below represent a timeline of the life and crimes of serial killer Kiyoshi Okubo. A complete collection of serial killer events can be found on our Serial Killer Timeline.

Date Event Description
Jan 17 1935Kiyoshi Okubo was born in Takasaki, city in Gunma Prefecture, Japan.  #19350117
Jan 17 1955
(Age 20)
20th Birthday
Jan 17 1965
(Age 30)
30th Birthday
1971
(Age 35/36)
Kiyoshi Okubo started his serial killing spree. #1971
May 14 1971
(Age 36)
Kiyoshi Okubo arrested. #19710514
1971
(Age 36/37)
Kiyoshi Okubo ended his serial killing spree. #1971
Feb 22 1973
(Age 38)
Kiyoshi Okubo was convicted and sentenced to death by hanging at Kosuge Detention Center in Katsushika, Tokyo, Japan.  #19730222
Jan 17 1975
(Age 40)
40th Birthday
Jan 22 1976
(Age 41)
Kiyoshi Okubo was executed. cause of death: capital punishment, executed by hanging at Kosuge Detention Center in Katsushika, Tokyo, Japan. #19760122

Serial Killers By Active Year


39 / 40
ANSWERED
Serial Killer
Boolean Questions:
Killer
Question
Killer
Answer
Total
Answered
problems in school TRUE 218
teased in school TRUE 215
previous crimes TRUE 363
previous jail TRUE 347
previous prision TRUE 332
kill at killers home TRUE 315
rape TRUE 447
strangle TRUE 437
living with children FALSE 267
suicide FALSE 216
killed in prison FALSE 210
father drug abuse FALSE 190
mother drug abuse FALSE 192
physically defect FALSE 298
speach defect FALSE 298
head injury FALSE 297
physically abused FALSE 228
psychologically abused FALSE 221
sexually abused FALSE 223
drug abuse FALSE 223
alcohol abuse FALSE 222
psychologist FALSE 256
forensic hospital FALSE 255
previous killed FALSE 207
kill at victims home FALSE 318
used weapon FALSE 448
used gun FALSE 447
torture FALSE 421
stalk FALSE 413
blindfold FALSE 359
bound FALSE 401
sex with body FALSE 426
mutilated FALSE 440
ate part of body FALSE 445
drank blood FALSE 436
posed body FALSE 360
totem body part FALSE 361
totem personal item FALSE 350
robbed FALSE 414


Books that Mention Kiyoshi Okubo

Book: Serial Killer Stranglers (mentions serial killer Kiyoshi Okubo)
Kevin Smith
Serial Killer Stranglers
Book: Serial Killer Rapists (mentions serial killer Kiyoshi Okubo)
Kevin Smith
Serial Killer Rapists
Book: The Japanese Conspiracy (mentions serial killer Kiyoshi Okubo)
Masayo Umezawa Duus
The Japanese Conspiracy
Book: The Encyclopedia of Serial Killers (mentions serial killer Kiyoshi Okubo)
Michael Newton
The Encyclopedia of Serial Killers
Book: Saigo Takamori - The Man Behind (mentions serial killer Kiyoshi Okubo)
Yates
Saigo Takamori - The Man Behind
Book: Proceedings of the American Society... (mentions serial killer Kiyoshi Okubo)
Hyonny Kim
Proceedings of the American Society for Compo...
Book: Hell’s Islands (mentions serial killer Kiyoshi Okubo)
Stanley Coleman Jers...
Hell’s Islands
Book: Serial Murderers and Their Victims (mentions serial killer Kiyoshi Okubo)
Eric W. Hickey
Serial Murderers and Their Victims

9 Books that mention Serial Killer
Kiyoshi Okubo

ISBN10 Book Title Killers
1733630600 Serial Killer Stranglers 164
1733630619 Serial Killer Rapists 266
0520204859 The Japanese Conspiracy 1
0816069875 The Encyclopedia of Seria... 108
113616037x Saigo Takamori - The Man... 1
1605951242 Proceedings of the Americ... 1
1585446165 Hell’s Islands 1
1305446348 Serial Murderers and Thei... 27
0691143080 The Princeton Reader 1

Kiyoshi Ōkubo (大久保 清, Ōkubo Kiyoshi, January 17, 1935 – January 22, 1976) was a Japanese serial killer. Between March 31, 1971 and May 10, 1971, he raped and murdered eight women, ages 16 to 21. He used a pen name, Tanigawa Ivan (谷川伊凡).

Wikipedia
External References
  1. Q1069217 on www.wikidata.org, Retrieved on Nov 21, 2018.
  2. Kiyoshi Ōkubo on en.wikipedia.org, Retrieved on Nov 21, 2018.
  3. Juan Ignacio Blanco, Kiyoshi OKUBO on murderpedia.org, Retrieved on Nov 21, 2018.
  4. 大久保清 on ja.wikipedia.org, Retrieved on Nov 21, 2018.
Internal References

Kiyoshi Okubo is included in the following pages on Killer.Cloud the Serial Killer Database

  1. #5 of 14 [ Page 1 ] of Serial Killers active in Japan
  2. #21 of 57 [ Page 2 ] of Serial Killers with birthdays in January
  3. #24 of 55 [ Page 2 ] of Capricorn Serial Killers sorted by Confirmed Victims
  4. #33 of 649 [ Page 3 ] of serial killers sorted by Profile Completeness
  5. #98 of 249 [ Page 7 ] of Serial Killer Stranglers sorted by Confirmed Victims
  6. #116 of 305 [ Page 8 ] of Serial Killer Rapist sorted by Confirmed Victims
  7. #225 of 649 [ Page 15 ] of serial killers sorted by Confirmed Victims
  8. #438 of 649 [ Page 30 ] of the A-Z List of Serial Killers
  9. #634 of 649 [ Page 43 ] of serial killers sorted by Years Active
Statistics:
Serial Killers Statistics, charts Kiyoshi Okubo is included in: Active Serial Killers by Country, Serial Killers By Gender, Age of Serial Killer by Date, Killers By Astrological Sign, Killers By Birth Month, Serial Killers IQ Level, Highest Degree Achieved, Sexual Preference, Birth Category, Mannor of Death, Active Serial Killers by Year and Statistical Boolean Questions.
Years Active: