2026年6月3日、山口県下関市のコンビニのトイレに、当直中の警察官が拳銃を忘れ、約40分後に客が発見した。3 June 2026 — An on-duty police officer in Shimonoseki, Yamaguchi Prefecture, left his handgun in a convenience store restroom, and a customer found it about 40 minutes later.

At around 12:35 a.m. on June 3, 2026, a customer at a convenience store in Shimonoseki, Yamaguchi Prefecture, entered a restroom stall and found a belt and holster hanging from a hook. The holster contained a pistol.

Shimonoseki is a port city of roughly 250,000 people at the westernmost tip of Honshu. Officers in many prefectures have been permitted to use convenience stores while on duty in recent years. The gun belonged to an on-duty officer of the Yamaguchi Prefectural Police, who had visited the store about 40 minutes before the customer's discovery.

The customer told the store staff, who contacted the police. The officer admitted to having left the weapon behind. The Yamaguchi Prefectural Police announced it would remind all officers to confirm they have their firearm whenever they move to a new location.