Police released a video clip from a surveillance camera showing the man who thrust a knife before a male clerk at the post office, located in Chuo Ward, and stole more than 100,000 yen on July 3 at just before 4:30 p.m. The suspect then fled the scene on a bicycle.
There were no injuries in the incident.
The video shows the suspect wearing a gray hooded sweatshirt, black pants and sunglasses. Standing approximately 165 centimeters in height and having a medium build, he is believed to be aged in his 50s or 60s.
As of noon on Wednesday, the man was still wanted in connection with the case.