A former MUFG Bank employee who was arrested for stealing gold bars from customer safe deposit boxes is believed to have circumvented an access control system and undertaken the thefts when the bank was both open and closed, an investigative source said Thursday.Yukari Imamura, 46, has told investigators that she turned off the system's power source before entering the safe deposit box room, the source said, a move she likely hoped would conceal her actions.Imamura was arrested Tuesday for allegedly stealing around 20 kilograms of gold bars worth around 260 million yen ($1.6 million) deposi…READ FULL ARTICLE