← Back to South Korea casesJeon Min-geun and Choi Seong-hee Disappearance Involving AC, Busan, South Korea
Case Summary
A newlywed couple, Jeon Min-geun and Choi Seong-hee, disappeared mysteriously from their apartment in Busan in May 2016. Despite CCTV footage showing them entering their home, there was no footage of them leaving. The wife sent unusual messages indicating illness, but suspicions arose about the husband and a woman named AC, the husband's ex-girlfriend, who had a history of obsessive behavior and had entered South Korea shortly before the disappearance. AC fled the country after the incident, and although arrested abroad, was not extradited due to insufficient direct evidence. The case remains unsolved after 10 years, with no confirmed whereabouts or signs of life from the couple.
Basic Information
Country: South Korea
State/Province: Busan, South Korea
City/Region: Busan
Incident Type: Missing Person / Presumed Homicide
Relationship Status: Married
Relationship Duration: Approximately 6 months
Affair / New-Partner Context
Recorded context: Unclear / not reported
Reported initiator: Unclear / not reported
Incident Date: May 27, 2016
Relationship Journey
Relationship Origins:
- Arranged marriage
- Friends circle
Relationship Stages:
- Married Living Together
Analysis
Contributing Factors:
- Domestic Conflict
- Family pressure
- Suspicion of infidelity
Red Flags:
- Secretive communication patterns
- Deception after incident
- Escalation Pattern / Violence
- Secret affair
- Missing Suspect
- Threats
Motives:
- Revenge
- Jealousy
- Eliminate romantic rival
Relationship Outcomes:
- Arrest made
- Missing
- Investigation still ongoing
People Link Graph
Relationship Journey Graph
Origin
- Arranged marriage
- Friends circle
How the relationship or connection began.
Status
- Married
Approximately 6 months
Stages
- Married Living Together
Important relationship phases recorded for this case.
Warning Signals
- Secretive communication patterns
- Deception after incident
- Escalation Pattern / Violence
- Secret affair
- Missing Suspect
- Threats
Reported red flags or early concern points.
Pressure Points
- Domestic Conflict
- Family pressure
- Suspicion of infidelity
- Revenge
- Jealousy
- Eliminate romantic rival
Contributing factors and possible motives from the available sources.
Incident
2016-05-27
Outcome
- Arrest made
- Missing
- Investigation still ongoing
Recorded relationship or case outcome.
Sources
English labels are shown first. Original-language titles are preserved for source verification.
Jeon Min-geun and Choi Seong-hee Disappearance Involving AC, Busan, South Korea
사건의뢰 · Original language: Korean
View original title
부산 신혼부부 실종사건ㅣ10년동안 사라진 신혼부부 도대체 무슨 일이 일어났던걸까? [해외살인사건]
AI Intelligence Assessment
Relationship Pattern
Jealousy
Pattern Analysis
The case involves a newlywed couple whose disappearance is linked to jealousy and obsessive behavior from the husband's ex-girlfriend AC. The ex-girlfriend's persistent interference, threats, and suspicious presence around the time of disappearance suggest a pattern of jealousy-driven conflict escalating to a presumed violent outcome.
Investigative Notes
Police investigated the disappearance with CCTV and phone tracking; luminol tests found no blood; the ex-girlfriend AC was identified as prime suspect after immigration and financial behavior analysis; AC was arrested abroad but not extradited due to lack of direct evidence; investigation remains open with public appeals for information.
Investigation Confusion
Uncertainty about how the couple left the apartment undetected; no direct evidence linking AC to the crime; conflicting narratives about the husband's role; inability to extradite suspect limits investigation.
Case Reconstruction / Puzzle Pieces
The couple was last seen entering their apartment separately on May 27-28, 2016, with no footage of leaving. The wife sent unusual messages possibly not authored by her. The husband communicated with others after disappearance claiming illness of wife. AC, the husband's ex-girlfriend, entered South Korea twice around the disappearance, paid in cash to avoid tracking, and fled after investigation intensified. Police suspect foul play but lack direct evidence. The case remains unsolved after 10 years.
Risk Assessment
High risk due to obsessive jealousy, threats, and disappearance with no trace; presence of a third party with motive and suspicious behavior increases risk.
Key Takeaways
Jealousy and obsessive ex-partners can escalate to disappearance or presumed homicide; lack of direct evidence and cross-border complications hinder resolution; early suspicion and thorough investigation of third-party interference are critical.
AI Case Q&A
What early signals mattered most?
Unusual messages from the wife, lack of contact, husband's suspicious communications, and the ex-girlfriend's presence and behavior.
Which clues helped connect the case?
CCTV footage showing entry but no exit, phone tracking showing last signals in different cities, unusual message tone, and AC's cash-only spending and travel records.
Which evidence types appeared strongest?
CCTV footage, phone location data, immigration records, financial transaction patterns, and communication logs.
Witness / Eyewitness Statements
Theater troupe members noted unusual absence and message tone; family reported no contact; police statements about investigation details; no direct eyewitness accounts of disappearance.
How did follow-up reports change the understanding?
Initial investigation was confidential; later publicized; arrest of AC abroad but refusal of extradition changed investigation dynamics; no new evidence emerged after publicization.
What remained unclear?
Exact circumstances of disappearance, fate of the couple, direct involvement of AC, and whereabouts of the couple remain unknown.