Tyshida Williams was a 31-year-old Black woman and special police officer found critically wounded inside an apartment on South Capitol Street SW in Washington, D.C., on the morning of July 30, 2023. Police responded at about 8:57 a.m. to a call initially reported as a suicide; emergency responders transported Williams to a hospital, but she was pronounced dead. The Office of the Chief Medical Examiner ruled her death a homicide.

Officers found Williams’s partner, Pernell Sims, at the scene amid a trail of blood, bloody clothing, and a Glock handgun on a bed. Surveillance video from the building’s parking garage captured a lengthy argument over Williams’s cell phone just before the shooting; the footage shows Sims grabbing Williams by her hair, throwing her to the ground, and kicking her in the chest before they returned to the apartment where Sims’s child was present and the fatal shot was fired. Sims had prior domestic violence prosecutions dating to 2013.

Did anyone in the neighborhood or building see or hear the argument captured on camera, or have information about the couple’s interactions leading up to that morning?