Ryoji Aoki has been missing since Dec. 6 from Detroit.
His car, a red 2013 Mazda 3 hatchback was found abandoned later the same day in Hartland Township by Clyde and Bullard Road.
The vehicle was unlocked and his cell phone was found inside, though the keys were not.
Aoki's supervisor reportedly allowed him to leave work early that day because he did not appear to be in a good state of mind.
He attempted to contact Aoki the next day and when he was unsuccessful, went to his residence where Aoki's roommate told him he had not come home the night before.
He is also known as Roy, police say. He's 33 years old, stands at 6 feet tall and has a thin build.
If you have any information regarding his whereabouts, please contact the Detroit Police Department at 313-596-5440.
