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OSINT Case File

Sujin Han Allegedly Murdered by Sierra Ruby Fisher and Woojin Han, Federal Way, Washington, United States

Case Summary

On May 29, 2025, Woojin Han called 911 reporting his daughter Sujin Han was unresponsive. Police found Sujin dead for hours with multiple injuries indicating homicide. Woojin and his live-in girlfriend Sierra Ruby Fisher were arrested. Investigations revealed prolonged abuse of Sujin and other children in the home. Woojin confessed to physical abuse and stress-related violence. Both face assault and homicide charges; trial ongoing.

Verified True
Confidence 4
Incident Date May 29, 2025
Incident Type Family Homicide

Basic Information

Country: United States

State/Province: Washington, United States

City/Region: Federal Way

Incident Type: Family Homicide

Relationship Status: Live-in relationship

Relationship Duration:

Incident Date: May 29, 2025

Incident Sequence and Additional Victims

Primary reported outcome: Homicide

Reported self-harm outcome: No suicide or attempt reported

Reported sequence: Order not reported / unclear

Additional victims reported: 0

Relationship Journey

Relationship Origins:

  • Friends circle
  • Met on social media

Relationship Stages:

  • Dating
  • Living Together without Marriage

Analysis

Contributing Factors:

  • Financial Issues
  • Domestic Violence Allegation
  • Custody Dispute
  • Mental instability
  • Divorce / Separation
  • Family pressure

Red Flags:

  • Escalation Pattern / Violence
  • Manipulative behavior
  • Threats
  • Divorce Pending / Recent Separation
  • High-Conflict Household

Motives:

  • Jealousy
  • Control/domination
  • Fear of exposure

Relationship Outcomes:

  • Legal case ongoing
  • Homicide before marriage
  • Arrest made

People Link Graph

Relationship Journey Graph

1

Origin

  • Friends circle
  • Met on social media

How the relationship or connection began.

2

Status

  • Live-in relationship
3

Stages

  • Dating
  • Living Together without Marriage

Important relationship phases recorded for this case.

4

Warning Signals

  • Escalation Pattern / Violence
  • Manipulative behavior
  • Threats
  • Divorce Pending / Recent Separation
  • High-Conflict Household

Reported red flags or early concern points.

5

Pressure Points

  • Financial Issues
  • Domestic Violence Allegation
  • Custody Dispute
  • Mental instability
  • Divorce / Separation
  • Family pressure
  • Jealousy
  • Control/domination
  • Fear of exposure

Contributing factors and possible motives from the available sources.

6

Incident

2025-05-29

7

Outcome

  • Legal case ongoing
  • Homicide before marriage
  • Arrest made

Recorded relationship or case outcome.

Sources

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

Sujin Han Allegedly Murdered by Sierra Ruby Fisher and Woojin Han, Federal Way, Washington, United States

Tangled Web Interrogations · Original language: English

View original title

Mom Has No Idea She's About To Get Arrested For Murder

AI Intelligence Assessment

Relationship Pattern

Domestic Violence

Pattern Analysis

The case involves prolonged domestic violence and abuse within a live-in relationship, culminating in the fatal injury of a child. Both partners were implicated in abusive behavior, with evidence of coercive control, physical violence, and neglect. The victim was a child with medical vulnerabilities, and the abuse was hidden from public view, including failure to enroll the child in school and refusal to seek medical treatment.

Investigative Notes

Police investigation revealed inconsistencies in suspect statements, multiple injuries inconsistent with accidental causes, and eyewitness accounts from children in the home. Both suspects arrested and charged; trial ongoing. Prior protection orders and police reports noted but enforcement was limited. Authorities questioned for administrative failures in follow-up.

Investigation Confusion

Initial 911 call was an attempt to conceal the homicide. Suspects gave conflicting and inconsistent accounts. Uncertainty about exact timing of injuries and death. Suspects' narratives conflicted with physical evidence and eyewitness statements.

Case Reconstruction / Puzzle Pieces

Sujin Han, a child with medical challenges, lived with her father Woojin Han and his girlfriend Sierra Ruby Fisher, who also had children from a previous relationship. Sujin suffered prolonged abuse from both adults. On May 29, 2025, Sujin was found dead with multiple injuries. Woojin called 911 but delayed reporting. Police found evidence of intentional harm. Both adults were arrested and charged. Investigations uncovered a history of domestic violence, neglect, and failed protective interventions.

Risk Assessment

High risk due to ongoing domestic violence, coercive control, and neglect of a vulnerable child. Multiple prior reports to authorities and failure of protective interventions increased risk.

Key Takeaways

Early intervention in domestic violence cases is critical, especially involving vulnerable children. Protective orders and police reports must be effectively enforced. Coercive control and neglect can escalate to fatal outcomes. Multi-victim abuse dynamics complicate investigations and require comprehensive family assessments.

AI Case Q&A

What early signals mattered most?

Repeated reports to authorities, visible injuries on the child, and witnesses' accounts of violence were early signals.

Which clues helped connect the case?

Multiple injuries inconsistent with accident, inconsistent suspect statements, eyewitness accounts from children, and delayed emergency call helped connect the case.

Which evidence types appeared strongest?

Physical injuries on the victim, eyewitness testimonies, 911 call recordings, and medical examinations were strongest evidence types.

Witness / Eyewitness Statements

Children in the home provided eyewitness accounts of abuse by both suspects. Police and paramedics observed the victim's condition and suspect behavior. Neighbors or other witnesses not reported.

How did follow-up reports change the understanding?

Follow-up reports clarified the involvement of both suspects, revealed prior protection orders, and exposed administrative failures in prior investigations.

What remained unclear?

Exact timeline of injuries and death remains partially unclear. Full extent of each suspect's role and details withheld or undisclosed.

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