The suspect who was also carrying a purse was caught on surveillance video.
The robbery occurred around 12:52 p.m. Tuesday at the Vist Bank located at 1210 Rockland Street in Reading.
Police say the suspect handed the teller a note demanding money.
After receiving an undisclosed amount of money, the suspect fled on foot.
Anyone with information should contact the Reading Police Department at 610-655-6116.