On May 5, 2026, in Gwangju, South Korea, a young high school girl was murdered by Jang Yoon-gi, a 17-year-old male high school student. Jang had a history of stalking a 26-year-old Vietnamese woman he worked with since 2024, including breaking into her residence and committing sexual crimes. After she moved away to avoid him, Jang became angry and attacked a random victim. CCTV and truck black box footage revealed that Jang planned the attack, following and attempting to sexually assault the girl before killing her when she resisted. A 17-year-old male student who tried to help was seriously injured but survived. Jang has been indicted on charges of rape and murder under the Special Act on Sexual Violence. He also has a criminal record involving secret filming of a middle school girl. The investigation is ongoing with efforts to ensure a heavy sentence.
Country: South Korea
State/Province: None
City/Region: Gwangju
Incident Type: Murder
Relationship Status: Unknown
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Incident Date: May 5, 2026
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How the relationship or connection began.
Important relationship phases recorded for this case.
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2026-05-05
Recorded relationship or case outcome.
English labels are shown first. Original-language titles are preserved for source verification.
김복준의 사건속으로 · Original language: Korean
Gwangju stabbing and murder case involving Jang Yoon-gi
Jealousy
The case involves a suspect with a persistent one-sided romantic obsession and stalking behavior toward a woman he worked with. After she moved away to avoid him, the suspect's anger and frustration escalated, leading to a planned sexual assault and murder of a random victim. The pattern shows escalation from stalking and sexual crimes to lethal violence triggered by rejection and inability to access the original target.
Police initially investigated the motive as random violence but changed charges to rape and murder after reviewing truck black box footage showing premeditated stalking and attempted sexual assault. The suspect was identified as Jang Yoon-gi, with a history of sexual crimes including secret filming of a minor and assault on a Vietnamese woman. The victim's friend who tried to intervene was seriously injured. The investigation is ongoing with multiple charges being prepared for indictment.
Initial police narrative suggested random knife attack, but later evidence from black box footage contradicted this, revealing premeditated sexual assault intent. The suspect's motive and victim targeting were clarified after forensic video analysis.
Jang Yoon-gi stalked a Vietnamese woman he worked with since 2024, committing sexual crimes and assaulting her in early May 2026. After she moved away for protection, Jang became enraged and fled his home when police began investigating him. On May 5, 2026, he drove an SUV to Gwangju, waited for a young high school girl, followed her, attempted to drag her for sexual assault, and stabbed her to death when she resisted. A male student who tried to help was injured. Police used black box footage to confirm the sequence and intent, leading to indictment on rape and murder charges.
High risk due to persistent stalking, prior sexual offenses, escalation to violence, and use of a weapon. The suspect demonstrated premeditation and dangerous behavior, indicating a severe threat to public safety.
Persistent stalking and unaddressed sexual offenses can escalate to lethal violence. Early intervention and protection for stalking victims are critical. Surveillance evidence such as vehicle black boxes can be crucial in clarifying motives and actions. Bystander intervention carries risks but can save lives.
Persistent stalking and repeated harassment of the Vietnamese woman, including break-in and sexual assault, were early signals of escalating risk.
Truck black box footage showing the suspect waiting, following, and attacking the victim was key to understanding the crime's premeditation and sexual assault motive.
Forensic analysis of black box footage and CCTV, forensic evidence of secret filming, and victim and witness reports were strongest evidence types.
Not reported.
Initial reports described a random knife attack; later investigations revealed a planned sexual assault and murder, changing the charges and understanding of the case.
Exact relationship status between suspect and victim girl remains unclear; full extent of all crimes committed by suspect is still under investigation.