‘John Doe Duffel Bag’ arrested and charged in Brooklyn serial killings

WILLIAM C LOPEZ Cops today arrested and charged a Staten Island salesman — dubbed “John Doe Duffel Bag” — in connection to the murders of three separate Brooklyn shopkeepers. Suspect Salvatore Perrone, 63, earned his moniker because video surveillance spotted him, with bag in hand, near the latest crime scene. Here is…