The Cape Girardeau County prosecuting attorney’s office has charged a former person of interest in the Domorlo McCaster homicide investigation. 28-year-old Clarissa Simpson of Cape Girardeau has been charged with one count of tampering with physical evidence. Police say she helped clean blood from the vehicle in which McCaster was killed. Her bond was set at $50,000 cash only. Detectives say McCaster was last seen in a gold GMC Envoy with Rodney Smith and Terrell Hunt, persons of interest in the investigation, and 24-year-old Malcolm Harris of Cape Girardeau, later charged with second-degree murder, armed criminal action, unlawful possession of a firearm, tampering with physical evidence and abandonment of a corpse. A probable-cause statement from Lt. Don Perry says the vehicle is owned by Rodney Smith’s girlfriend Shaneika Robinson. Robinson’s sister, Bianca Robinson-Rainey of Dyersburg, Tennessee, told detectives Robinson and Simpson left the vehicle May 15 at her house. Perry says Robinson-Rainey said she saw blood and bleach stains on the front passenger seat and the vehicle smelled of both blood and bleach. Perry says Smith and Robinson returned to Dyersburg several days later, and they told Robinson-Rainey that McCaster had been killed in the vehicle. Robinson told detectives she was with Simpson on May 14.