STONINGTON — A multi-agency police investigation ended with the arrest of a former Bradford man who has been charged with stealing more than 1,800 hats with a retail price of almost $50,000 from a Pawcatuck company where he was previously employed.Stalin Medina, 28, of Lynn, Mass, was arrested by East Providence police last week on a Stonington police warrant charging him with first-degree larceny in the theft from Fabrigraphics, 21 Pawcatuck Ave., last May. Medina was held at the Adult Correctional Institutions before being taken into custody by Stonington officers last Tuesday. He was released on a promise to appear in New London Superior Court on Feb. 14. Westerly police first came into contact with Medina when serving a warrant at a Bowling Lane address in Bradford last May. The warrant was for delivery of cocaine involving another person.When police entered the apartment, other residents were there. Police said they observed several laundry baskets with brand-new snap-back sports hats, still inside factory packaging.The Adidas-brand hats retail for up to $28 each, according to reports, and had NFL and NBA logos on them.“Several of these same hats were displayed in the kitchen as if for sale,” a Westerly police report indicated. The residents of the apartment said the hats belonged to Medina. Westerly police contacted the owners of Fabrigraphics, who said Medina had been one of their employees and confirmed the hats were missing.By that time, Medina had moved out of the area.Brian J. Fraticelli, 23, of 81 Bowling Lane, Bradford, was also charged by Westerly police with receiving stolen goods, a felony, in connection with possession of the hats.