WASHINGTON, D.C. – In a significant development for public safety in the District, David Key, a 39-year-old resident of Washington, D.C., was found guilty today in D.C. Superior Court for the stabbing death of 33-year-old Devon Greenfield. U.S. Attorney Jeanine Ferris Pirro announced the verdict, which stems from a violent incident that occurred on April 1, 2024, in Northeast D.C.
Key was convicted on two charges: first-degree murder while armed and second-degree murder while armed. Superior Court Judge Neal Kravitz has scheduled sentencing for November 20, 2026. The prosecution presented compelling evidence that included surveillance footage of the confrontation, which took place around 7:04 p.m. in the 300 block of 61st Street NE, an area known for its close-knit community.
According to court documents, the altercation began when Key confronted Greenfield aggressively, leading to a violent struggle. Key allegedly slashed Greenfield in the face and, after the victim fell to the ground, repeatedly stabbed him in the chest and back, inflicting three deadly wounds to the heart. The brutal attack ended with Key walking away, leaving Greenfield to collapse on the curb.
Law enforcement officials apprehended Key two days later, on April 3, 2024. He was found wearing the same clothing as seen in the surveillance footage and was in possession of a knife consistent with the weapon used in the attack. Additionally, DNA evidence collected from the crime scene further confirmed Key’s involvement in the crime.
This case was investigated by the Metropolitan Police Department, with Interim Chief Jeffery Carroll joining U.S. Attorney Pirro in announcing the verdict. The prosecution was led by Assistant United States Attorneys Emily Clarke and Joshua Hall, highlighting the ongoing efforts to ensure justice and safety within the D.C. community.
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