On April 22, 2016, Mr. Oh, a 52-year-old man living in Namyangju, South Korea, was found dead after ingesting a lethal dose of nicotine and zolpidem. His wife, Ms. Song, and her lover, Mr. Hwang, were implicated in a murder plot involving secret marriage registration, purchase of nicotine poison, and financial fraud. Both suspects denied charges but were convicted and sentenced to life imprisonment. This case was the first confirmed nicotine poisoning murder in Korea.
Country: South Korea
State/Province: Gyeonggi Province, South Korea
City/Region: Namyangju
Incident Type: Murder
Relationship Status: Married
Relationship Duration: Approximately 6 years (cohabitation), marriage registered 2 months before death
Incident Date: April 22, 2016
Relationship Origins:
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How the relationship or connection began.
Approximately 6 years (cohabitation), marriage registered 2 months before death
Important relationship phases recorded for this case.
Reported red flags or early concern points.
Contributing factors and possible motives from the available sources.
2016-04-22
Recorded relationship or case outcome.
English labels are shown first. Original-language titles are preserved for source verification.
사건의뢰 · Original language: English
Nicotine poisoning murder involving a wife and her lover
Jealousy
The case involves a secret marriage shortly before the victim's death, an extramarital affair, and financial motives. The wife and her lover conspired to poison the husband with nicotine, motivated by financial gain and elimination of the spouse. The pattern includes deception, secret affairs, and financial exploitation.
Police investigation revealed purchase of nicotine poison by Mr. Hwang, secret marriage registration without victim's consent, and rapid disposal of the victim's belongings. Both suspects denied charges but were convicted based on circumstantial evidence and psychological analysis. The case was the first confirmed nicotine poisoning murder in Korea.
Initial cause of death was considered ischemic heart disease; suspicion of poisoning arose after autopsy. Both suspects denied involvement, complicating investigation. Lack of direct evidence required psychological and physiological testing to confirm deception.
Mr. Oh died suddenly after consuming zolpidem and a lethal dose of nicotine administered orally. Ms. Song and Mr. Hwang conspired to poison him, registering marriage secretly and planning financial gain. Mr. Hwang purchased nicotine poison 10 days before death. After death, Ms. Song quickly cremated the body, disposed of belongings, and transferred assets. Police arrested both suspects after tracing evidence and monitoring communications.
High risk due to secret marriage registration, extramarital affair, financial exploitation, and use of poison. The suspects showed deceptive behavior and attempted to conceal evidence, indicating premeditation and control.
Secret marriage registration and extramarital affairs can be precursors to lethal domestic conflicts. Poisoning with nicotine, though rare, is a viable murder method. Rapid disposal of victim's belongings and financial transactions post-death are critical red flags. Psychological testing can aid in cases lacking direct evidence.
Secret marriage registration without victim's consent, extramarital affair, purchase of nicotine poison, and rapid post-death asset transfers.
Purchase records of nicotine solution by Mr. Hwang, phone searches for lethal doses, secret marriage registration documents, and suspicious behavior of Ms. Song after death.
Autopsy toxicology reports detecting nicotine and zolpidem, purchase records of nicotine, phone data showing searches and communications, psychological lie detector tests.
Not reported.
Follow-up reports revealed the involvement of Mr. Hwang, purchase of nicotine poison, and psychological testing results confirming deception. Initial death cause was ischemic heart disease but later changed to poisoning.
Exact method of nicotine administration remains inferred as oral; no syringe found. Motives beyond financial gain and affair remain partially speculative.