Police are seeking a bank robber who made a "significant threat" to a bank teller at a drive-through window

Police are seeking a bank robber who made a "significant threat" to a bank teller at a drive-through window Monday afternoon and drove away with an undisclosed amount of money.Employees of the Bank of America branch on West Main Street reported the robbery at 1:44 p.m. They said a man in a car showed a threatening note to a teller at the window, implying he had a weapon and would hurt workers if his demand was not met, police said.Witnesses described the robber as in his 30s or 40s and operating a smaller, blue, four-door vehicle.City police said they didn't think this robbery was related to one Friday at the Banknorth branch on Main Street. Police are working with the FBI on both investigations.