日本東京池袋的購物地標「太陽城」於3月26日晚間發生持刀殺人事件。一名男子闖入商場二樓的一家店鋪，當場刺殺一名女性店員後，再自傷身亡。現場監控畫面顯示，多名店員四處奔走，高喊「叫警察！」、「後退！」。事發時店內有多名顧客和員工在場，周邊商鋪事後也紛紛落閘關門。當地警方在晚上7時20分左右接獲報案，稱有男子持刀行兇。監控畫面顯示，一名二十多歲男子進入店內後，突然將刀刺向女店員的頸部，女店員當場倒地，隨後男子又以刀自傷頸部。兩人送醫時已無意識，後來確認不治身亡。

死者年僅21歲，行兇者26歲。兩人在2023年12月於八王子市同一份兼職工作中相識，次年10月開始交往，並於2025年7月分手。據報導，去年12月25日，女子曾向警局報案稱「前男友一直糾纏不休」，持續跟蹤騷擾自己。警方受理後，在護送女子回家時發現嫌疑人就在附近，遂依據《反跟蹤騷擾法》將其逮捕。

在警方建議下，女子曾於今年1月5日至2月6日暫住親戚家中，之後才返回自己住所。至3月12日，警方已透過電話等方式與女子聯繫9次。報導指出，男子在獲釋後並未表現出異常行為。警方負責人表示：「我們認為已採取了最佳措施。」目前，警方正在進行進一步調查，以釐清事件細節及可能的處理漏洞。

這起事件凸顯跟蹤與騷擾行為的嚴重後果，也再次引發日本社會對防範措施、警察干預以及保障受害者安全的討論。

On the evening of March 26, a tragic stabbing incident occurred at the “Sunshine City” shopping landmark in Ikebukuro, Tokyo, Japan. A man entered a store on the second floor, fatally stabbing a female employee before turning the knife on himself. Surveillance footage from the scene captured chaos as multiple staff members ran in different directions, shouting for help and urging others to move back. At the time of the attack, several customers and staff were inside the store, and nearby shops promptly closed their doors in response to the incident. Local authorities received a report around 7:20 p.m. that a man was armed with a knife and committing a violent act. According to the footage, a man in his twenties suddenly stabbed the female employee in the neck, causing her to collapse immediately. He then inflicted self-harm with the same knife. Both victims were transported to a hospital unconscious and were later confirmed deceased.

The female victim was 21 years old, and the assailant was 26. The two had first met in December 2023 while working a part-time job in Hachioji City and began dating in October of the following year. Their relationship ended in July 2025. On December 25 of last year, the woman had reported to the police that her ex-boyfriend had been persistently harassing her and following her. Police accepted the report, and while escorting her home, they encountered the suspect nearby and subsequently arrested him under the Anti-Stalking Law.

Following police advice, the woman temporarily stayed with relatives from January 5 to February 6 before returning to her own residence. Up until March 12, authorities had contacted her nine times via phone and other means to monitor the situation. Reports indicate that no unusual behavior was observed from the man after his release. A police spokesperson stated, “We believe we had taken the best possible measures.” The investigation into the circumstances of this incident is ongoing, as authorities continue to gather information and examine potential lapses.

This case underscores the serious consequences of stalking and harassment, and has sparked renewed discussions in Japan about preventive measures, police interventions, and the protection of individuals at risk.