Batavia police and the FBI are looking for a man who allegedly robbed the Old Second Bank, 1078 E. Wilson St., on Saturday morning.
Employees said the man displayed a black semi-automatic handgun and fled the area in a white or light-colored small four-door sedan with an unknown amount of money.
He is described as a white man between 25 and 30 years old, about five-feet, nine or 10 inches.
During the robbery, the man was wearing a black hooded sweatshirt, a black scarf over his face and blue jeans.
Anyone with information should call Batavia police at 630-454-2500 or the FBI at 312-421-6700.