( CNN ) There 's a $ 30,000 reward for information leading to the conviction of a bank robbery trio known as the Black Hat Bandits , suspected in a two-month string of robberies across Maryland and Virginia , the latest coming Monday . They 've earned their name for the black hats they wear during their heists , and the feds say they 're becoming increasingly dangerous . `` In an escalation of violence , the Black Hat Bandits have become more brazen at each robbery having threatened bank customers and tellers , most recently holding a gun to a customer 's head , and jumping teller counters in attempts to gain access to bank vaults , '' according to an FBI wanted poster . An FBI statement last month provided more details : `` During each robbery the black hat bandits have been described as carrying handguns and wearing winter coats , sunglasses , black hats ( either a winter knit cap or wide brimmed hat ) and facial disguises such as ski masks or a fake beard . '' The bandits pulled off their most recent robbery Monday during lunch hour at a Wells Fargo bank in Falls Church , Virginia . It marked the crew 's eighth bank robbery this year . `` We now confirm that this is a three-person crew : two who take over the bank and one who waits in the car , '' an FBI spokesperson told CNN affiliate WJLA . No one was injured in the holdup , which unfolded after two black-clad men -- one African-American , one white -- entered the bank with firearms , robbed the bank and fled in a vehicle waiting outside , police told the station . Hours after the robbery , investigators were at the scene gathering evidence , which included a footprint in the snow , WJLA reported . It was the second Falls Church bank robbery in recent weeks , but the February 21 robbery of an Apple Federal Credit Union two blocks from Monday 's crime scene was the work of a lone gunman , not the Black Hat Bandits , authorities told WJLA . The robbers who committed Monday 's robbery are described as in their 40s and between 5 feet 7 inches and 5 feet 9 inches tall , according to the FBI . Other banks which the Black Hat Bandits are suspected of robbing include a Bank of America in McLean , Virginia , on January 2 ; a BB & T in Fairfax , Virginia , on January 16 ; a Bank of America in Vienna , Virginia , on January 20 ; an Essex Bank in Arnold , Maryland , on January 30 ; and a SunTrust Bank in Waldorf , Maryland , on February 5 . In one of their more audacious undertakings , the robbers hit two banks on February 18 . First , they hit a BB & T in Vienna , Virginia , before traveling to a Wells Fargo in Sterling , Virginia , 40 minutes later . `` One of the suspects put his gun to a customer 's head while demanding everyone to 'get down , ' and demanded money from a victim teller . In both robberies the subjects fled the banks with an undisclosed amount of money , '' the FBI said in a statement . The FBI is asking anyone with information on the bank robberies in Virginia to call 202-278-2000 . Those with information on the Maryland heists should call 410-265-8080 . The public can also submit anonymous tips at https : //tips.fbi.gov .
Latest of 8 robberies came at Wells Fargo bank in Falls Church , Virginia , during lunch hour . FBI : two robber white , the other black ; they 're in their 40s and stand about 5 ' 8 '' Trio includes a driver who waits outside while other One take over bank , FBI says .