A armed suspect robbed a Franklin Square Citibank on Monday, Nassau County police said.
Nassau police said the man entered the bank at 670 Franklin Ave. around 9:10 a.m. and demanded money from the teller.
The suspect, who wore a dark mask and had a handgun, got away with an undetermined amount of cash. Police said he left through a rear door, heading north toward the Franklin Gates shopping center.
The five employees and five customers in the bank at the time of the robbery were unharmed.
The suspect is described as standing between 5 feet, 7 inches and 5 feet, 10 inches tall and was wearing a gray hooded sweatshirt, gray sweatpants and gloves.
Police ask that tipsters call Nassau County Crime Stoppers at 800-244-8477. All callers remain anonymous.