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OSINT Case File

Mr. Yoo Murdered by Shim, Kim Joo-jin, and others, Yongin, Gyeonggi Province, South Korea

Case Summary

On August 21, 2012, in Yongin, South Korea, Mr. Yoo, a 56-year-old real estate businessman, was attacked at his home by two assailants using an electronic shocker and blunt weapons. The attack was a contract killing ordered by real estate developer Park Young-min due to land disputes and financial conflicts. The investigation revealed a complex conspiracy involving multiple suspects, including Park, his younger brother, and intermediaries. Mr. Yoo died from severe head injuries. Park was sentenced to life imprisonment but later committed suicide in prison. The executors, Kim Joo-jin and Jo Wang, were also sentenced to life imprisonment, and the middleman Shim received 13 years. The victim's wife suffered severe trauma, and the case was thoroughly investigated by the Yongin Western Police Station.

Verified True
Confidence 3
Incident Date Aug. 21, 2012
Incident Type Murder

Basic Information

Country: South Korea

State/Province: Gyeonggi Province, South Korea

City/Region: Yongin

Incident Type: Murder

Relationship Status: Married

Relationship Duration:

Incident Date: Aug. 21, 2012

Relationship Journey

Relationship Origins:

  • Family introduction

Relationship Stages:

  • No data available.

Analysis

Contributing Factors:

  • Financial Issues
  • Divorce / Separation

Red Flags:

  • Secretive communication patterns
  • Deception after incident
  • Escalation Pattern / Violence
  • Manipulative behavior
  • Missing Suspect
  • Threats
  • Firearm Access / Concerning Weapon Behavior

Motives:

  • Money / Financial Gain
  • Revenge
  • Property dispute

Relationship Outcomes:

  • Legal case ongoing
  • Homicide before marriage
  • Suicide/self-harm
  • Arrest made
  • Deadbody recovery

People Link Graph

Relationship Journey Graph

1

Origin

  • Family introduction

How the relationship or connection began.

2

Status

  • Married
3

Stages

Important relationship phases recorded for this case.

4

Warning Signals

  • Secretive communication patterns
  • Deception after incident
  • Escalation Pattern / Violence
  • Manipulative behavior
  • Missing Suspect
  • Threats
  • Firearm Access / Concerning Weapon Behavior

Reported red flags or early concern points.

5

Pressure Points

  • Financial Issues
  • Divorce / Separation
  • Money / Financial Gain
  • Revenge
  • Property dispute

Contributing factors and possible motives from the available sources.

6

Incident

2012-08-21

7

Outcome

  • Legal case ongoing
  • Homicide before marriage
  • Suicide/self-harm
  • Arrest made
  • Deadbody recovery

Recorded relationship or case outcome.

Sources

English labels are shown first. Original-language titles are preserved for source verification.

Mr. Yoo Murdered by Shim, Kim Joo-jin, and others, Yongin, Gyeonggi Province, South Korea

김복준의 사건속으로 · Original language: Korean

View original title

[다시보는 대한민국살인사건 32화] - 용인 청부 살인사건

AI Intelligence Assessment

Relationship Pattern

Financial Conflict

Pattern Analysis

The murder was a contract killing motivated by financial disputes and land conflicts between the victim and the real estate developer. The attackers used an electronic shocker and blunt weapons in a premeditated assault. The case involved multiple layers of conspiracy, including subcontracting and attempts to evade detection. The victim's family suffered severe trauma, and the investigation revealed complex interpersonal and financial tensions.

Investigative Notes

The investigation was thorough, involving forensic analysis, black box footage, CCTV review, and extensive phone and transaction record analysis. Police identified five main suspects with grudges against the victim and expanded inquiries to 40 acquaintances. The discovery of the electronic shocker and its serial number linked the weapon to the suspects. Arrests and confessions followed, with the main suspect Park Young-min sentenced to life imprisonment before his suicide. The executors and middleman were also convicted. The victim's wife was a key witness but suffered trauma.

Investigation Confusion

Initial uncertainty about the identity of the attackers due to obscured faces and lack of direct evidence. Suspects initially denied involvement or lied about possession of weapons. The subcontracting nature of the crime complicated direct attribution. The police initially accepted some denials until evidence such as recordings and recovered weapons emerged.

Case Reconstruction / Puzzle Pieces

Mr. Yoo and his wife left home on August 21, 2012, to meet a business contact. After failing to meet, they returned home where two attackers ambushed Mr. Yoo using an electronic shocker and blunt weapons. The attackers fled after the wife escaped and called for help. Police investigation revealed the attack was ordered by real estate developer Park Young-min due to land and financial disputes. Park subcontracted the killing to Shim, who further subcontracted to Kim Joo-jin and Jo Wang. Evidence included black box footage, recovered weapons, phone records, and a recorded confession. Arrests and trials led to convictions and sentences.

Risk Assessment

High risk due to premeditation, use of weapons, and involvement of multiple conspirators with criminal backgrounds. The financial and property disputes escalated to lethal violence, indicating severe conflict and potential for further retaliatory acts.

Key Takeaways

Financial and property disputes can escalate to lethal violence involving contract killings. Thorough forensic and digital investigations are critical in uncovering complex conspiracies. Witness trauma must be considered in investigations. The use of specialized weapons like electronic shockers indicates premeditation. Confessions and recorded evidence can be decisive in prosecution.

AI Case Q&A

What early signals mattered most?

The victim's known financial and land disputes, presence of grudges, and suspicious communications among suspects were early signals.

Which clues helped connect the case?

Black box footage, recovered electronic shocker and batteries, phone call and message records, and the wife's eyewitness testimony were key clues.

Which evidence types appeared strongest?

Physical evidence from the crime scene, electronic shocker serial numbers, forensic analysis, recorded confessions, and digital communication logs were strongest.

Witness / Eyewitness Statements

The victim's wife witnessed the attack and provided crucial testimony despite trauma. A nearby man responded to her screams and assisted. No other witness statements were reported.

How did follow-up reports change the understanding?

Follow-up investigations revealed the involvement of multiple suspects, uncovered the subcontracting chain, and led to arrests and convictions. The discovery of the electronic shocker and recorded confession significantly advanced the case.

What remained unclear?

The identity of the second unknown executor initially remained unclear until later arrest. The full extent of all accomplices and their roles may not be completely detailed.

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