Jeju Police Name Suspect in Ex-Partner's Killing After Stalking Case Reopened

What Jeju Police Say Happened

Jeju police on Thursday publicly identified a 61-year-old man, Kang Seong-eun, as the suspect in the killing of his former partner, a woman in her 40s, in Jeju City earlier this month. The Jeju Provincial Police Agency posted his name and photograph on its website, and the disclosure is set to remain online until Nov. 30.

According to police, Kang attacked the woman at around 1:38 a.m. on Oct. 12 as she returned to her home in Yeon-dong, Jeju City. Investigators believe he forced her toward his vehicle and stabbed her to death. They also say he had entered her residence carrying an incendiary substance, and that he had placed a weapon and paint thinner near a staircase in the building beforehand — signs, in their assessment, that the attack was planned in advance.

Kang was referred to prosecutors in detention this week on charges including retaliatory murder, aggravated attempted abduction and confinement, aggravated trespassing, and preparing to commit arson at an occupied building. Police applied the retaliatory murder charge after concluding the alleged crime was tied to the victim's decision to end the relationship and to disputes involving money.

The case has also drawn attention to what happened before the killing. Investigators found that Kang had repeatedly demanded to meet the victim after their breakup and that, in March, he allegedly threatened to distribute recordings of their sexual activity. The victim reported those threats to police at the time, but the case was closed after she did not appear for questioning or provide further cooperation. Following the killing, police reopened inquiries into the earlier allegations and added charges of stalking and violations of the law punishing sexual violence crimes.

Why the Earlier Case Was Closed — and Reopened

The most consequential detail in this case is not the attack itself, which police describe in straightforward terms, but the trail of warnings that preceded it. The victim had already contacted police in March, when Kang allegedly threatened to distribute recordings of their sexual activity — a threat that, under South Korea's stalking and sexual violence laws, is treated as a serious offense. That complaint was closed when she did not appear for questioning or provide further cooperation.

Why the Earlier Complaint Was Closed

Under Korean criminal procedure, investigations can stall or close when a complainant does not cooperate, particularly in cases where the alleged offense is difficult to prosecute without the victim's testimony. The article does not explain the exact procedural basis for closing the March case, and that detail would require verification. What is clear is that the case was not pursued to a charging decision, and that police have now reopened it with additional allegations attached.

What the Reopened Case Adds

The new charges — stalking and violations of the law punishing sexual violence crimes — broaden the legal picture beyond the October killing. The retaliatory murder charge is significant in itself: it reflects a police determination that the killing was a response to the victim ending the relationship and to a money dispute, rather than an isolated act. In Korean law, that designation carries specific legal weight, though the article does not detail how prosecutors will proceed.

What Remains Unclear

The article does not say whether the earlier complaint was formally dismissed, suspended, or simply left inactive, nor whether police faced any internal review over how it was handled. Those are the questions that would determine whether this becomes a case about a single crime or about how stalking complaints are processed more broadly. Until those details are confirmed, the public record is limited to what police have disclosed.