A customer inside the bank at the time of the robbery tells ABC11 Eyewitness News that he had a gun pointed at his head.
"This guy comes in the front door with a ski mask on and orders everybody on the floor," eyewitness Ken Rowland said. "I was in the office and he come in and grabbed me and threw me across the chair, but I'm okay. He had a gun to my head, but luckily he didn't pull the trigger."
He says the suspect then smacked a female teller around with the barrel of his gun and ran out.
"Jumps over the counter, tells them to fill up the bag and slaps the girls around with the barrel of the gun a few times," Rowland said.
Police say the teller was transported by EMS from the scene.
The suspect didn't fire any shots. He was last seen fleeing on foot after the robbery.
The masked suspect is described as an African American man with a heavyset build who stands about 5' 8" tall and was wearing all dark clothing. He is believed to be in his 30s.
Authorities have released a surveillance photo of the suspect.
Police are currently searching for the suspect.
"I hope they find whoever did this," said Lauren Rutherford, who lives across the street from SunTrust. "That does make you really concerned that it does happen close to home."
This past October, a masked gunman robbed the same bank - shooting at eyewitnesses after leaving.
Just last week, Raleigh police responded to a State Employees Credit Union on Hillsborough Street after a robber ran away.
There were also two separate robberies in January and December that happened at the same Wachovia branch in the 6600 block on Falls of Neuse Road.
In all, there have been a total of six bank robberies in Raleigh between the end of December to now.
Police say if anyone has any information that might assist the investigation call the Raleigh Police Department Detective Division at (919) 996-3555 or Raleigh CrimeStoppers at (919) 834-HELP. CrimeStoppers pays cash rewards for information that helps solve cases.