Authorities are warning they are armed, dangerous and getting more aggressive with each attack.
We spoke with one customer who was there during a robbery in Sterling, Va. She said she approached the bank and discovered the door was locked and knew something was terribly wrong.
"I saw a little boy yelling, ‘The bank was robbed! The bank was robbed!" said Dietra McKenzie.
She said a split second later, her routine bank errand turned into something out of a movie scene.
"I saw the cops," she said. "They surrounded the bank and I was thinking, ‘Oh my God, what's going on?'"
The FBI has dubbed these two suspects "Black Hat Bandits."
Since January 2, they have hit seven banks -- five in Virginia and two in Maryland:
- Jan. 2, 2015: Bank of America in McLean, Va.
- Jan. 16, 2015: BB&T in Fairfax, Va.
- Jan. 20, 2015: Bank of America in Vienna, Va.
- Jan. 30, 2015: Essex Bank in Arnold, Md.
- Feb. 5, 2015: SunTrust Bank in Waldorf, Md.
- Feb. 18, 2015: BB&T in Vienna, Va.
- Feb. 18, 2015: Wells Fargo in Sterling, Va.
Officials warn the suspects are very dangerous and have recently held a gun to someone's head.
Surveillance images taken of the suspects in action have seen these suspects wearing fake beards, ski masks, sunglasses and the infamous black hats.
Investigators say they have jumped over counters to get to bank vaults and threatened customers and employees.
The escalation of violence in their crimes is especially concerning to police and law enforcement in Virginia and Maryland and they are working with banks to make sure employees are aware these dangerous criminals are on the loose.
The FBI is also offering a reward of up to $30,000 for information that leads to the identification, arrest and conviction of these suspects.