Previously Convicted Murderer is Re-Arrested and Arraigned for the Killing of an Elderly Man

            WASHINGTON – Randall Cornell Mack, 42, of Washington, D.C., was arrested September 2, 2025 and arraigned yesterday on an indictment charging him with conspiracy, robbery while armed, first-degree murder while armed (felony murder), possession of a firearm during crime of violence and unlawful possession of a firearm (prior conviction), stemming from the May 2, 2025, killing of Steven Stewart, announced U.S. Attorney Jeanine Ferris Pirro. 

           Mack, along with his co-defendant Phillip Palmer were indicted on August 6, 2025.  Co-defendant Palmer was previously arrested on this indictment on August 21, 2025. 

Mack appeared September 3, 2025, before Superior Court Judge Todd Edelman where he pleaded not guilty. A detention hearing is set for September 19, 2025, at 9:30 a.m. for both Mack and Palmer.

           According to the government’s evidence, on May 2, 2025, at approximately 12:44 p.m., Mack and Palmer are alleged to have entered 61-year-old Steven Stewart’s apartment inside 633 21^st Street NE, robbed him and then shot him multiple times at close range. Mr. Stewart was a vulnerable victim who had to use a wheelchair and/or walker for trips beyond his apartment.

            Mack has a previous murder conviction from 2010, where his probation was revoked in 2011, and he was sentenced to 12-36 years.  Mack was paroled for the murder in 2019, and his parole was revoked in 2024, but he was later released on parole again allowing him the opportunity to kill Mr. Stewart. Mack was to be supervised on parole through 2037.

            Joining in the announcement was Chief Pamela Smith of the Metropolitan Police Department.

            This case is being investigated by the Metropolitan Police Department and is being prosecuted by Assistant United States Attorney Stephanie Dinan.

           An indictment is merely an allegation, and all defendants are presumed innocent until proven guilty beyond a reasonable doubt in a court of law.