← Back to South Korea casesCommon-law wife and Mother-in-law Injured in Alleged Murder Attempt by Man in his 60s, Ulsan, South Korea
Case Summary
In early March 2026, a man in his 60s attacked his common-law wife and mother-in-law at the mother-in-law's house in Ulsan, South Korea. Suspecting his wife of infidelity, he forcibly entered the home with a weapon and stabbed his wife multiple times, causing severe injuries requiring six weeks of treatment. The mother-in-law was also injured while trying to intervene. The man was sentenced to 14 years in prison for attempted murder. The incident followed the man's recent parole after serving time for habitual DUI offenses. The wife had refused to register their marriage, and the man’s suspicions and delusions about her affair escalated to violence.
Basic Information
Country: South Korea
State/Province: Ulsan, South Korea
City/Region: Ulsan
Incident Type: Attempted Murder
Relationship Status: Live-in relationship
Relationship Duration:
Incident Date: None
Incident Sequence and Additional Victims
Primary reported outcome: Attempted homicide or serious injury
Reported self-harm outcome: No suicide or attempt reported
Reported sequence: Order not reported / unclear
Additional victims reported: 1
Additional victim events:
- Mother-in-law — Family or household member; Seriously injured; Same episode; order unclear
Relationship Journey
Relationship Origins:
- Family introduction
Relationship Stages:
- Living Together without Marriage
Analysis
Contributing Factors:
- Cheating / Infidelity
- Domestic Violence Allegation
- Drugs / Alchohol Use
- Domestic Conflict
- Divorce / Separation
Red Flags:
- Escalation Pattern / Violence
- Threats
- Firearm Access / Concerning Weapon Behavior
- Divorce Pending / Recent Separation
- Mental Health Deterioration / Hopelessness
Motives:
- Jealousy
- Eliminate romantic partner
Relationship Outcomes:
- Arrest made
- Investigation still ongoing
People Link Graph
Relationship Journey Graph
Origin
- Family introduction
How the relationship or connection began.
Status
- Live-in relationship
Stages
- Living Together without Marriage
Important relationship phases recorded for this case.
Warning Signals
- Escalation Pattern / Violence
- Threats
- Firearm Access / Concerning Weapon Behavior
- Divorce Pending / Recent Separation
- Mental Health Deterioration / Hopelessness
Reported red flags or early concern points.
Pressure Points
- Cheating / Infidelity
- Domestic Violence Allegation
- Drugs / Alchohol Use
- Domestic Conflict
- Divorce / Separation
- Jealousy
- Eliminate romantic partner
Contributing factors and possible motives from the available sources.
Outcome
- Arrest made
- Investigation still ongoing
Recorded relationship or case outcome.
Sources
English labels are shown first. Original-language titles are preserved for source verification.
Common-law wife and Mother-in-law Injured in Alleged Murder Attempt by Man in his 60s, Ulsan, South Korea
김복준의 사건속으로 · Original language: English
View original title
Man in his 60s attacks common-law wife and mother-in-law with a weapon
AI Intelligence Assessment
Relationship Pattern
Jealousy
Pattern Analysis
The case involves a live-in couple with escalating jealousy and suspicion of infidelity by the man, leading to a violent attack on his common-law wife and her mother. The man's recent imprisonment and parole, combined with the wife's refusal to formalize their marriage, contributed to the conflict escalation. The violence was premeditated and severe, reflecting deep relationship dysfunction and mental instability.
Investigative Notes
The Ulsan District Court sentenced the man to 14 years for attempted murder. The case was tried under charges of attempted murder due to intent to kill. The man admitted to the crimes. The mother-in-law's emotional distress was noted. The man committed the crime while on parole. Police classified the wife's injuries as severe due to treatment duration and fractures. Investigation details confirm premeditation and weapon use.
Investigation Confusion
No significant confusion reported; suspect admitted guilt; no dispute over incident facts.
Case Reconstruction / Puzzle Pieces
The man, recently paroled after serving time for habitual DUI, suspected his common-law wife of infidelity after she refused to register their marriage and visited her mother's house. In early March 2026, he forcibly entered the mother-in-law's home at night with a weapon and stabbed his wife multiple times. When the mother-in-law intervened, he attacked her as well. Both victims sustained injuries requiring medical treatment. The man was arrested and sentenced to 14 years for attempted murder.
Risk Assessment
High risk due to prior habitual DUI, recent parole, premeditated violence, and severe injuries inflicted. The man's delusional jealousy and refusal to accept separation increased danger to victims.
Key Takeaways
Jealousy and suspicion in long-term live-in relationships can escalate to severe violence, especially when combined with substance abuse and recent incarceration. Refusal to formalize relationships and parole status may increase risk. Early intervention and monitoring of high-risk individuals are critical.
AI Case Q&A
What early signals mattered most?
The man's habitual DUI, recent imprisonment and parole, wife's refusal to register marriage, and his delusional suspicion of infidelity were key early signals.
Which clues helped connect the case?
The wife's visit to her mother's house, the man's breaking of the door, weapon possession, and multiple stab wounds indicated premeditated violence.
Which evidence types appeared strongest?
Victim injuries requiring weeks of treatment, weapon breakage and replacement, suspect's admission, and court sentencing were strongest evidence.
Witness / Eyewitness Statements
Not reported.
How did follow-up reports change the understanding?
No follow-up reports available to indicate changes in understanding.
What remained unclear?
Exact relationship duration and detailed mental health diagnosis remain unclear.