A robber flashed a gun and stole an undetermined amount of cash from the HSBC at Broadway and East Ninth Street at around 9 a.m. this morning.
A police spokesman said the suspect, a white man in his 40s carrying a blue knapsack, was last seen running west on East Eighth Street.
At 10:30 a.m. investigators were still mingling outside of the bank, which was closed.