The 300 million yen robbery (三億円事件, San Oku En Jiken), also known as the 300 million yen affair or 300 million yen incident, was an armed robbery that took place in Tokyo, Japan, on December 10, 1968. A man posing as a police officer on a motorcycle stopped bank employees transferring money and stole 294 million yen. It is the single largest heist in Japanese history to date, and remains unsolved.
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