In spring 2024, Ms. M, a 40-year-old employee in Kofu City, Yamanashi Prefecture, disappeared after leaving work. Security footage showed colleague Shota Ozawa waiting for her and later interacting with her. Ozawa had stalked Ms. M for years, including secret filming, and was previously arrested for voyeurism. On April 30, 2024, after Ms. M told Ozawa she would call the police due to his behavior, he attacked and strangled her. He concealed her body by moving it to a river area 40 km away. Ozawa was arrested and later sentenced to 20 years in prison for murder. The case highlights dangers of obsessive stalking escalating to fatal violence in a workplace context.
Country: Japan
State/Province: Yamanashi, Japan
City/Region: Kofu City
Incident Type: Murder
Relationship Status: Colleague
Relationship Duration: Approximately 2 years
Incident Date: April 30, 2024
Relationship Origins:
Relationship Stages:
Contributing Factors:
Red Flags:
Motives:
Relationship Outcomes:
How the relationship or connection began.
Approximately 2 years
Important relationship phases recorded for this case.
Reported red flags or early concern points.
Contributing factors and possible motives from the available sources.
2024-04-30
Recorded relationship or case outcome.
English labels are shown first. Original-language titles are preserved for source verification.
事件解説チャンネル · Original language: Japanese
職場を出たあと消息を絶った女性職員…警察も驚いた異様な真相とは【山梨同僚女性事件】
Jealousy
The case involves obsessive stalking by a colleague with unreciprocated romantic feelings, escalating from voyeurism and harassment to fatal violence. The perpetrator misinterpreted his stalking as love and reacted violently to rejection, reflecting a pattern of jealousy and coercive control within a workplace context.
Police used security camera footage to identify and arrest Ozawa. He admitted guilt and led police to the crime scene. He was re-arrested on suspicion of murder. Trial concluded with a 20-year prison sentence. The case highlights the importance of early intervention in stalking and workplace harassment.
Initial media reports conflicted on the exact time of disappearance. The suspect's claim of wanting to 'clear up misunderstandings' conflicted with evidence of stalking and voyeurism. No confusion reported about suspect identity.
Ms. M left work on April 30, 2024. Ozawa waited at the employee exit, propositioned her, and upon rejection and threat of police involvement, attacked and strangled her. He concealed the body by moving it to a river area 40 km away. Security footage tracked his movements. He was arrested two days later and re-arrested for murder. Trial revealed his stalking history and distorted feelings.
High risk due to persistent stalking, secret filming, prior legal action, and escalation to physical violence culminating in murder. The perpetrator's inability to accept rejection and history of adult entertainment addiction contributed to risk.
Persistent stalking and voyeurism can escalate to lethal violence, especially when the perpetrator misinterprets rejection and exhibits coercive control. Workplace environments can conceal dangerous obsessive behavior. Early reporting and intervention are critical.
Persistent stalking, secret filming, and Ms. M's consultation with her supervisor about harassment were key early signals.
Security camera footage showing Ozawa waiting and speaking to Ms. M, prior arrest for voyeurism, and his suspicious movements after the disappearance helped connect the case.
Security camera footage, confession by Ozawa, and physical evidence at the crime scene were strongest evidence types.
Not reported.
No follow-up reports changing the understanding were available.
Exact timing of disappearance remains somewhat unclear due to conflicting media reports.