A murder suspect's mother is pleading for her son to turn himself in to authorities. The woman is the mother of 20-year-old Christopher Tyson. She allowed us to tape her at the Greenville Police Department Thursday on the condition we would conceal her identity. Police have been searching for Tyson since Sunday, when they say he shot and killed 23-year-old Deondre Bynum at an apartment on Fleming Street in Greenville. Tyson's mother spoke Thursday about her son and pleaded for him to do the right thing. The deadly shooting at the apartment on Fleming Street was the second shooting there in two weeks.