A man from Washington, D.C., has entered a guilty plea to charges of second-degree murder while armed, in connection with the 2019 stabbing that critically injured and ultimately led to the death of 23-year-old Jamal Greenlee. Matthew Walker, aged 26, submitted the plea in the Superior Court, acknowledging his role in Greenlee's death who was left paralyzed by the stabbing and succumbed to his injuries on November 4, 2020, according to a news release from the U.S. Attorney's Office for the District of Columbia.

Walker, already serving a 50-year sentence for the separate first-degree murder of David Remen, will face sentencing for Greenlee's death on January 10, 2025, by Judge Marisa Demeo. This recent development trails the adjudication of the Remen case, where Walker was convicted for a murder that took place on Valentine's Day of 2019 at Trojan Labor.

In the statement announcing the guilty plea, U.S. Attorney Matthew M. Graves, alongside Chief Pamela A. Smith of the Metropolitan Police Department, praised the efforts of the investigative team. Assistant U.S. Attorney Daniel Seidel was particularly lauded for his role in prosecuting the case. The statement referenced by the Department of Justice emphasizes the collaborative work that led to the resolution of these violent crimes.