Cass L. Singleton, known as Stello, was a 26-year-old aspiring rapper who was shot and killed on July 21, 2015, in the Washington Park neighborhood on Chicago’s South Side. He was driving a Dodge Charger on the 5900 block of South State Street when a red sedan pulled alongside, several people exited and opened fire, and Singleton was struck multiple times, including a fatal wound to the head; he died at the scene.

Singleton was a member of the rap collective Team600 and appeared in local music videos, including cameos in 600Breezy’s Do Sum and Edai’s Do Sum. Friends and family mourned him on social media, remembering his personality and his love of music and family. No arrests have been announced and the case remains under investigation.

Does anyone who lived in Washington Park that night or who knew Stello have details that could help investigators?