The robbery occurred at about 9:20 a.m. at the Webster Bank, 1177 Post Road, police said.
The suspect entered the bank, approached a teller and handed her a note, police said. The suspect did not display a weapon, police said.
After receiving money from the teller, the suspect fled in a newer model maroon vehicle, police said.
The man is believed to have a tattoo on the left side of his neck, police said.
Anyone with information is asked to contact the Fairfield Detective Bureau at 203-254-4840. There is a reward for any information in the case leading to an arrest.
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