Stoughton Man Sentenced to Three Years in Prison for Armed Robberies of Postal Workers

BOSTON – A Stoughton man was sentenced yesterday in federal court in Boston for the armed robberies of United States Postal Service (USPS) letter carriers that took place on Nov. 29, 2022 in Mattapan and Dec. 16, 2022 in Hyde Park. In one instance, the defendant robbed the letter carrier at knifepoint.

Kenneth Demosthene, 24, was sentenced by U.S. District Court Chief Judge F. Dennis Saylor IV to three years in prison, to be followed by three years of supervised release. In July 2024, Demosthene pleaded guilty to two counts of robbery of any person having lawful charge, control, or custody of any mail matter or of any money or other property of the United States, aiding and abetting and two counts of assaulting, resisting, or impeding certain officers or employees, aiding and abetting. In May 2023, Demosthene was indicted by a federal grand jury along with his alleged co-conspirator Myesha Lewis.

USPS has seen a rise in the use of arrow keys to facilitate the theft of U.S. Mail. An arrow key is a specific key designed to open designated blue USPS collection boxes in a specific area. These arrow keys are the property of USPS and it is a federal offense for an unauthorized person to possess one. Since July 2022, there have been at least 23 assaults on USPS letter carriers while in the performance of their official duties in Boston and its surrounding communities. These incidents included the attempted or successful robbery of USPS arrow keys from letter carriers. Additionally, of these 23, 15 of the robberies were instances where the perpetrators were reportedly armed with a knife, firearm, or both.

On Nov. 29, 2022, in Mattapan, Demosthene and, allegedly, Lewis followed and forcibly robbed a USPS letter carrier of an arrow key. Demosthene approached the letter carrier and said, “I’m going to need your master key,” before reaching into the letter carrier’s mail satchel and grabbing the arrow key. The arrow key was secured around the letter carrier’s belt with a brass chain. It is alleged that the force used to physically break the brass chain caused the letter carrier to be pulled off the front steps. Demosthene and, allegedly, Lewis fled the scene in a rental vehicle.

On Dec. 16, 2022, in Hyde Park, Demosthene and, allegedly, Lewis robbed another USPS letter carrier of an arrow key at knife point. Demosthene approached the USPS letter carrier and said, “Give me your f****** arrow key.” The letter carrier put their hands in the air as the defendants attempted to remove the arrow key, at first by force pulling at the chain. Demosthene and, allegedly, Lewis then attempted to cut it with the knife – eventually breaking the arrow key loose, and fleeing the scene on foot.  

Lewis is expected to plead guilty on Oct. 30, 2024.

Acting United States Attorney Joshua S. Levy and Ketty Larco-Ward, Inspector in Charge of the United States Postal Inspection Service, Boston Division made the announcement today. Valuable assistance was provided by the U.S. Postal Service, Office of the Inspector General. Assistant U.S. Attorney Luke A. Goldworm of the Major Crimes Unit is prosecuting the case.

The details contained in the charging documents are allegations. The remaining defendant is presumed innocent unless and until proven guilty beyond a reasonable doubt in a court of law.