← Back to South Korea casesHong Seung-tae and Han Young-yi Allegedly Murdered by Yang Jeong-su, Gumi, Gyeongbuk, South Korea
Case Summary
In April 2011, in Gumi, Gyeongbuk, South Korea, a newlywed couple preparing for marriage was attacked by a stranger, Yang Jeong-su. The perpetrator attempted to rape the bride-to-be, Han Young-yi, and stabbed her fiancé, Hong Seung-tae, to death during the struggle. The attacker fled leaving behind evidence, leading to his arrest and confession. The victim survived but suffered severe trauma. The case highlights police investigative procedures and safety advice for women.
Basic Information
Country: South Korea
State/Province: None
City/Region: Gumi
Incident Type: Murder
Relationship Status: Engaged
Relationship Duration:
Incident Date: April 19, 2011
Relationship Journey
Relationship Origins:
- Met at Workplace
Relationship Stages:
- Engaged
Analysis
Contributing Factors:
- Domestic Conflict
Red Flags:
- Escalation Pattern / Violence
- Suspects identified
- Threats
Motives:
- Jealousy
- Eliminate romantic partner
Relationship Outcomes:
- Homicide during marriage
- Arrest made
- Investigation still ongoing
People Link Graph
Relationship Journey Graph
Origin
- Met at Workplace
How the relationship or connection began.
Status
- Engaged
Stages
- Engaged
Important relationship phases recorded for this case.
Warning Signals
- Escalation Pattern / Violence
- Suspects identified
- Threats
Reported red flags or early concern points.
Pressure Points
- Domestic Conflict
- Jealousy
- Eliminate romantic partner
Contributing factors and possible motives from the available sources.
Incident
2011-04-19
Outcome
- Homicide during marriage
- Arrest made
- Investigation still ongoing
Recorded relationship or case outcome.
Sources
English labels are shown first. Original-language titles are preserved for source verification.
Hong Seung-tae and Han Young-yi Allegedly Murdered by Yang Jeong-su, Gumi, Gyeongbuk, South Korea
사건의뢰 · Original language: Korean
View original title
[대한민국 살인사건 350화] 신혼부부에게 들이닥친 비극, 묻지마 살인사건
AI Intelligence Assessment
Relationship Pattern
Domestic Violence
Pattern Analysis
The incident involved a violent attack on an engaged couple by a stranger with a criminal history. The perpetrator attempted sexual assault and murdered the fiancé during the struggle, indicating a pattern of domestic violence and lethal escalation in a personal relationship context.
Investigative Notes
Police responded with a large team following protocol for violent crimes. Evidence such as the perpetrator's hat, shoes, and knife were collected for DNA analysis. Extensive area searches, CCTV reviews, and taxi GPS tracking were conducted. The suspect was identified and arrested after being found at a motel. His confession was obtained under pressure due to strong forensic evidence.
Investigation Confusion
Initial uncertainty about the perpetrator's identity due to face covering and lack of immediate leads. Confession reliability questioned due to suspect's criminal background but supported by forensic evidence.
Case Reconstruction / Puzzle Pieces
Han Young-yi was attacked at her apartment entrance by Yang Jeong-su, who attempted rape and took photos to threaten or exploit her. Hong Seung-tae intervened and was fatally stabbed. The perpetrator fled leaving behind physical evidence. Police investigation involved forensic analysis, area canvassing, and technology-assisted tracking leading to suspect identification and arrest.
Risk Assessment
High risk due to violent escalation, presence of weapon, and attempted sexual assault. The perpetrator's criminal history and unplanned violent behavior increased danger to victims.
Key Takeaways
The case underscores the importance of rapid police response, forensic evidence collection, and technology use in investigations. It highlights risks of violent escalation in personal attacks and the need for public awareness on personal safety, especially for women walking alone.
AI Case Q&A
What early signals mattered most?
The perpetrator's carrying of a knife and following the victim were early signals of potential violence.
Which clues helped connect the case?
Blood traces, abandoned hat and shoes, CCTV footage of suspect exiting taxi near crime scene, and suspect's injured finger were key clues.
Which evidence types appeared strongest?
DNA evidence from blood on victim and suspect's belongings, CCTV footage, and GPS taxi records were strongest evidence types.
Witness / Eyewitness Statements
Han Young-yi provided detailed testimony of the attack and struggle. No other witness statements reported.
How did follow-up reports change the understanding?
No follow-up reports available beyond initial investigation and arrest.
What remained unclear?
Exact motive beyond opportunistic attack remains unclear; suspect's mental state and planning level uncertain.