Investigators say the robbery happened Wednesday at the Wells Fargo inside the Save Mart Grocery store on First and Bullard in Northeast Fresno.
This is a photo of the suspect taken from inside the store.
Police say he walked to the Wells Fargo counter and passed a note to a teller indicating he was robbing the bank and asking her to keep quiet.
The teller gave the suspect an undisclosed amount of money and the man left before officers could get there.
If you see this person, you're asked to call Fresno Police.