Overview

• Tokyo police arrested Park Yongjun, 30, on suspicion of killing his partner Ban Jiwon, 40, on Sept. 1 in Setagaya after he arrived from South Korea on Aug. 23.
• Investigators are examining reports that he bypassed the victim’s auto‑lock using the “co‑riding” method two days earlier, shortly after police instructed him to stay away.
• Kanagawa Prefectural Police convened 139 chiefs and senior staff to share new directives after concluding danger was underestimated in the Kawasaki stalking case, disciplining more than 40 personnel.
• Safety advisers recommend “double turns,” avoiding shared entry into auto‑lock buildings, and one‑person elevator rides, with suspicious situations reported via #9110.
• In court developments, the Nagano four‑murder trial heard parents testify about the defendant’s suspected mental illness as proceedings continue.