District Man Found Guilty of Voluntary Manslaughter and Related Charges for Killing Cousin in the Intersection of 29th and S Streets Southeast

Defendant Shot Victim Following a Series of Arguments Started by an Instagram Post

            WASHINGTON – Lewkus Turner, 29, of Washington, D.C., was found guilty by a jury of voluntary manslaughter while armed and related charges stemming from a mid-afternoon shooting on December 11, 2020, at 29^th and S Streets Southeast, announced U.S. Attorney Matthew M. Graves and Interim Chief Ashan M. Benedict, of the Metropolitan Police Department (MPD).

            Turner was found guilty by a jury, on June 9, 2023, following a trial in the Superior Court of the District of Columbia, of voluntary manslaughter while armed, possession of a firearm during a crime of violence, and unlawful possession of a firearm.  The Honorable Maribeth Raffinan scheduled sentencing for August 25, 2023.

            According to the government’s evidence, just before 4:00 p.m. on December 11, 2021, the victim—and Turner’s first cousin—Vincent Gyamfi, drove to the 1600 block of 29^th Street SE to speak to Turner regarding an Instagram post Turner had made earlier in the week. Shortly after arriving in the area, an argument broke out and Turner left the area. Turner returned shortly thereafter armed with a gun and the two men argued again before leaving in separate directions, with Mr. Gyamfi stopping his vehicle near the intersection of 29^th and S Streets SE. At 4:07 p.m., Turner drove to the intersection and confronted his cousin for a final time. Mr. Gyamfi ran at Turner’s car, and Turner shot Mr. Gyamfi three times with a large caliber weapon. Turner then dragged Mr. Gyamfi’s body into the street, got into his vehicle, and fled the scene without calling for aid.

            Turner was arrested in the murder case on December 29, 2021.  He has been in custody ever since.

            In announcing the verdict, U.S. Attorney Graves and Interim Chief Benedict commended the work of those who investigated the case from the Metropolitan Police Department.  They also expressed appreciation for the assistance provided by the U.S. Marshals Service and FBI CAST team.  They acknowledged the efforts of those who worked on the case from the U.S. Attorney’s Office, including Dan Lenerz and Bryan Han of the Appellate Section; Investigative Analyst Zachary McMenamin; Victim/Witness Advocate Karina Hernandez; Special Agents Mark Crawford and Durand Odom of the Criminal Investigations Unit; Supervisory Victim/Witness Service Coordinator Katina Adams-Washington, Victim/Witness Service Coordinators Tonya Jones and Maenylie Watson; Supervisory Budget Analyst Nikiya Burnette and Accounting Technician Evelyn Miles; Paralegal Specialist Meridith McGarrity; and Litigation Technology Specialist Charlie Bruce.

            Finally, they commended the work of Assistant U.S. Attorneys Gregory Kimak, Christopher Carson, and Gauri Gopal, who investigated, indicted, and prosecuted the case.