The arrests announced on Friday were the result of an investigation that started in late June, Bergen County Prosecutor Mark Musella said. Get our free mobile appThe armed robbers stole an extraordinary $390,000 worth of jewelry from the victims, prosecutors said. Jarol Ledesma (Bergen County Prosecutor's Office) Jarol Ledesma (Bergen County Prosecutor's Office) loading... Justin Martha (Bergen County Prosecutor's Office) Justin Martha (Bergen County Prosecutor's Office) loading... Michael Mercedes Marte (Bergen County Prosecutor's Office) Michael Mercedes Marte (Bergen County Prosecutor's Office) loading...Jarol Ledesma, 22, of Brooklyn, was charged earlier this month.