The robbery happened at the Bank of America on Sedgwick Avenue in Darien around 10:30 Monday morning.
The man gave the bank teller a note demanding money, but he did not display a weapon.
He got away with an undetermined amount of cash.
The suspect had graying hair, was wearing a bright blue yarmulke, a grey waist length "pea coat," and dark pants.
The Darien Police K-9 Unit tracked the suspect to the area of Goodwives Shopping Center, where it is possible that the suspect then left the area in a vehicle. He had left the bank on foot.
If anyone has any information regarding this incident, or knows the identity of the subject in the attached photos, please call the Darien Police Detective Division at 203-662-5330.