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Press Release

Manhattan U.S. Attorney Announces Federal Charges Against Mamadou Ndao And Diabel Samb For String Of Gunpoint Robberies Of Cellphone Stores In Westchester County And Orange County, New York

For Immediate Release
U.S. Attorney's Office, Southern District of New York

Joon H. Kim, the Acting United States Attorney for the Southern District of New York, William F. Sweeney Jr., the Assistant Director-in-Charge of the New York Field Office of the Federal Bureau of Investigation (“FBI”), Anthony A. Scarpino Jr., the Westchester County District Attorney, and Christopher T. McNerney, Chief of the Greenburgh Police Department (“GPD”), announced the arrest of MAMADOU NDAO and DIABEL SAMB on charges of conspiracy to commit Hobbs Act robbery, Hobbs Act robbery, and a firearms offense.


Acting U.S. Attorney Joon H. Kim said:  “As alleged, Ndao and Samb endangered the lives of customers and store employees in a series of armed robberies.  Thanks to our law enforcement partners, the defendants are now in custody and will face justice in federal court.”


FBI Assistant Director William F. Sweeney Jr. said:  “Hard-working people go to work every day to earn a living, and abide by the laws of our country.  The subjects in this case allegedly chose to skip being hard-working and law abiding, and demanded money from stores at gunpoint, putting both customers and employees in harm’s way.  The FBI Westchester County Safe Streets Task Force pursues criminals each and every day who choose what they may believe is an easier way of life, but now face years in federal prison.”


Westchester County District Attorney Anthony A. Scarpino Jr. said:  “Due to the efforts of our dedicated partners in law enforcement, these perpetrators have been delivered into the Criminal Justice System where they belong.  We remain committed to reducing all types of crime, particularly those involving criminals who would resort to terrorizing retail store employees by robbing them at gunpoint. These arrests are a testament to our resolve and continued successful relationship with our partners in law enforcement at all levels.”


Greenburgh Police Chief Christopher T. McNerney said: “This successful investigation is the direct result of an outstanding cooperative effort by all of the agencies involved.  The arrests of these violent individuals and pending federal prosecution sends a message to the residents of Westchester and beyond that we are committed to using all resources available to fight crime and prosecute offenders to the fullest extent of the law.”


According to the allegations contained in the Complaint[1] charging NDAO and SAMB:


On October 24, 2017, NDAO and SAMB committed a gunpoint robbery of a Verizon store located in Scarsdale, New York.  SAMB entered the store carrying a firearm.  He displayed the gun to two store employees and directed them to open a safe in the back room of the store.  NDAO subsequently entered the store carrying a suitcase, which SAMB and NDAO filled with cellphones and other electronic devices.  Following the robbery, SAMB and NDAO fled in a vehicle that had been parked outside the store.  Law enforcement intercepted SAMB and NDAO in Mount Vernon, New York, where they were ultimately apprehended by the Greenburgh Police Department.  Law enforcement recovered clothing worn by SAMB and NDAO during at least two of these robberies in the vehicle the defendants had used to flee the scene.  Numerous stolen cellphones and other electronic devices were recovered from the suitcase NDAO had carried into the Scarsdale Verizon store.


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NDAO, 24, of New York, New York, and SAMB, 32, of New York, New York, are each charged with one count of Hobbs Act robbery, which carries a maximum sentence of 20 years in prison; one count of conspiracy to commit Hobbs Act robbery, which carries a maximum sentence of 20 years in prison; and one count of using a firearm during and in relation to a crime of violence, which carries a maximum sentence of life in prison.  The maximum potential sentences in this case are prescribed by Congress and are provided here for informational purposes only, as any sentencing of the defendants will be determined by a judge.


NDAO and SAMB were arrested by the GPD on October 24, 2017, and are expected to be presented tomorrow in White Plains federal court before United States Magistrate Judge Paul E. Davison.


Mr. Kim praised the outstanding investigative work of the Westchester County Department of Public Safety and the Real Time Crime Center, the Mount Pleasant Police Department, the Yonkers Police Department, the Tarrytown Police Department, the Town of Newburgh Police Department, the Pelham Police Department, the Greenburgh Police Department, and the FBI’s Westchester County Safe Streets Task Force, which comprises agents and task force officers from the FBI, the U.S. Probation Office, the Westchester County Department of Public Safety, the Westchester County District Attorney’s Office, the New York City Police Department, the City of Yonkers Police Department, the City of Yonkers Police Department, the Peekskill Police Department, and the Mount Vernon Police Department.  Mr. Kim thanked the Westchester County District Attorney’s Office for its significant contributions to the investigation and for its assistance in the arrest and apprehension of the defendants.


The case is being prosecuted by the Office’s White Plains Division.  Assistant United States Attorneys Christopher J. Clore and Gillian Grossman are in charge of the prosecution.


The charges contained in the Complaint are merely accusations, and the defendants are presumed innocent unless and until proven guilty.


[1] As the introductory phrase signifies, the entirety of the text of the Complaint and the description of the Complaint set forth below constitute only allegations, and every fact described should be treated as an allegation.

Updated October 31, 2017

Press Release Number: 17-354