CRIMESTOPPERS: Who killed Chineyelu Humphrey?

Shamayim Harris, better known as Mama Shu, says she saw who killed her son, Chinyelu Humphrey, four years ago. The shooting happened in front of his family?s home at Avalon Village in Highland Park. Mama Shu saw it unfold. "I?ve been saying over and over who killed my son. Wanting it to be looked into for four years now, and none of the other ways seem to work," she said. "I?m still trying to get them to go and speak with the killer. I know where he is. He?s in jail right now. Just to go and investigate."