Police said the suspect approached a teller and passed a note demanding money and implied he had a weapon.
After the teller complied with the suspect's demands, he left the store.
The suspect is described as an African American man with a medium complexion and medium build, standing about 6 feet tall.
He had a moustache and was wearing a white and black checkered shirt, black jeans, a black baseball cap and black sunglasses.
Anyone with information is asked to call the Raleigh Police Department's Detective Division at (919) 996-3555 or Raleigh CrimeStoppers at (919) 834-HELP. CrimeStoppers pays cash rewards for information that helps solve cases.