RelationWatch
OSINT Case File

Psychological & Behavioral Intelligence

Ms. Lee, Son, and others Murdered by Kang-ga, Jinju, Gyeongnam, South Korea

Human-reviewed analysis

Psychological & Behavioral Intelligence

This source-based behavioral analysis does not establish a clinical diagnosis, motive, or legal finding.

Case Overview

This case involves severe domestic violence culminating in a brutal, planned family homicide driven by delusional jealousy and refusal to accept separation. The offender exhibited controlling and violent behaviors, with premeditation and asset transfer indicating intent to end the family unit. The surviving daughter suffers lifelong trauma and disability.

Relationship Dynamics

The relationship was marked by domestic violence, delusional jealousy, and persistent harassment by the offender towards his separated wife and children. The wife sought to escape and divorce, but the offender refused and escalated violence. The offender's planning and threats culminated in a lethal attack on his family.

Escalation Summary

The pathway escalated from domestic violence and separation to persistent harassment and threats, followed by premeditated murder involving asset transfer and weapon preparation, ending in a brutal family homicide.

Observed Patterns and Case-Specific Context

Each entry separates the reported behavior or state from the analytical strength of the available narration.

Behavior / construct Person / subject Detailed case context Evidence
Jealousy Emotional state Kang-ga OffenderHusband of the victim

Kang-ga's delusional jealousy fueled his refusal to divorce and violent harassment, contributing to the escalation to murder.

Context or trigger: Delusional jealousy over wife's alleged infidelity

Reported expression: Accusations and violent behavior

Explicitly reported Confidence: High
Premeditation and planning Planning or impulsivity Kang-ga OffenderHusband of the victim

Kang-ga arranged his assets and prepared the murder weapon in advance, indicating deliberate planning of the family homicide.

Context or trigger: Asset transfer and weapon preparation before crime

Reported expression: Transferred assets to child from previous marriage; prepared weapon and threatening message

Explicitly reported Confidence: High
Coercive control Control dynamics Kang-ga OffenderHusband of the victim

Despite separation, Kang-ga exerted coercive control by repeatedly disturbing the family, forcing confrontations and maintaining dominance.

Context or trigger: Persistent harassment and refusal to accept separation

Reported expression: Repeated visits, knocking, and disturbances forcing wife to open door

Explicitly reported Confidence: High
Emotional abuse Control dynamics Kang-ga OffenderHusband of the victim

Kang-ga verbally abused Ms. Lee with insults and false accusations, contributing to emotional harm and fear.

Context or trigger: Verbal accusations and threats

Reported expression: Calling wife derogatory names and accusing her falsely

Explicitly reported Confidence: High
Grief and bereavement Emotional state Daughter VictimDaughter of the offender

The daughter survived the attack but suffers lifelong trauma and disability, expressing grief during court proceedings.

Context or trigger: Loss of mother and brother, severe injury

Reported expression: Silent crying and nodding in court, lifelong trauma

Explicitly reported Confidence: High
Instrumental aggression Offender behavior Kang-ga OffenderHusband of the victim

Kang-ga's aggression was instrumental, aimed at eliminating his family to end the relationship and avoid consequences.

Context or trigger: Planned murder to end family ties

Reported expression: Sequentially attacking sleeping family members with intent to kill

Narrative-supported psychological state Confidence: High
Maladaptive coping Coping response Kang-ga OffenderHusband of the victim

Kang-ga's response to marital separation was maladaptive, choosing violence and murder over lawful resolution.

Context or trigger: Refusal to accept separation and divorce

Reported expression: Violent murder instead of legal or peaceful resolution

Analytical inference Confidence: Moderate
Coercive control Control dynamics Kang-ga OffenderHusband of the victim

The offender's voice message threatening to kill his family and himself demonstrates coercive control and premeditation.

Context or trigger: Threatening voice message to mother-in-law

Reported expression: Expressed intent to kill family and self before crime

Explicitly reported Confidence: High

Behavioral Escalation Pathway

Select a stage to expand it; scroll horizontally to follow the full sequence.

Narrative sequence
1 Domestic violence and separation Kang-ga and Ms. Lee Explicitly reported

Ms. Lee fled with children due to domestic violence and delusional jealousy by Kang-ga, initiating separation in 2017.

Explicitly reported · High confidence

2 Persistent harassment Kang-ga OffenderHusband of the victim Coercive control Explicitly reported

Despite separation, Kang-ga repeatedly harassed and disturbed the family, refusing divorce and accusing his wife falsely.

Explicitly reported · High confidence

3 Premeditation and planning Kang-ga OffenderHusband of the victim Premeditation and planning Explicitly reported

Kang-ga transferred assets to child from previous marriage, prepared weapon, and sent threatening voice message before the attack.

Explicitly reported · High confidence

4 Brutal family homicide Kang-ga OffenderHusband of the victim Instrumental aggression Narrative-supported psychological state

Kang-ga attacked sleeping wife and children sequentially with a weapon, killing wife and son and severely injuring daughter.

Narrative-supported psychological state · High confidence

5 Offender flight and manhunt Kang-ga OffenderHusband of the victim Explicitly reported

After the attack, Kang-ga fled, discarded his phone, hid in a mountain, and was captured after three days following a large-scale police search.

Explicitly reported · High confidence

6 Legal proceedings and sentencing Kang-ga OffenderHusband of the victim Explicitly reported

Kang-ga was tried and sentenced to life imprisonment without parole; his claims of impulsivity were rejected; the surviving daughter testified requesting severe punishment.

Explicitly reported · High confidence

Arrows show the sequence described in the source narrative; they do not prove that one psychological state caused the next event.

Source Limits and Cautions

Analysis is based on reported facts from video transcript; no clinical diagnoses reported; psychological constructs inferred from narrative and legal findings; survivor's full psychological state not detailed.

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