On March 1, 2014, officers responding to a distress call at a condominium at 5255 Memphis Street in Denver’s Montbello neighborhood found two men shot to death. Richard E. Sims, 31, known to family as Richy Rich, and 23-year-old Dontai Rashad Carter each suffered fatal gunshot wounds to the head; the Denver Coroner’s Office ruled both deaths homicides.

Investigators focused on the condominium as the crime scene. Police identified a 2001 Chevy Tahoe as a vehicle of interest that may have been taken from the scene and recovered later that day in nearby Aurora. As officers approached the SUV, several people fled on foot; two were apprehended and a juvenile with outstanding warrants was detained, but no murder charges were filed then and no immediate link to the killings was announced.

The lack of witnesses and no clear motive left few leads, and the case remains unsolved. If anyone knew Richard Sims, Dontai Carter, or saw activity around 5255 Memphis Street or a 2001 Chevy Tahoe on March 1, 2014, please share what was seen with Denver authorities.