Police in Atlantic City have announced the arrest of a local man on charges that he robbed a branch of PNC Bank in the resort on Tuesday morning. Authorities announced they arrested 39 year old Sean Mason of Northfield; Mason was picked up by Northfield police without incident later in the day on Tuesday. Police believe Mason is the man who entered a branch of PNC Bank located at Boston and Atlantic Avenues in Atlantic City shortly before lunchtime and made off with some cash. Mason did not use a weapon during the holdup. He changed his clothing shortly after the bank robbery.