It happened around 8:15 a.m. in the 1200 block of N. Raleigh Boulevard.
Winston-Salem police say individuals met at a park to fight, and it escalated into a deadly shooting.
Prosecutors said new video evidence supported Frank Lalich's claim that he acted in self-defense.
Prosecutors said newly obtained video contradicts accounts previously provided by victims and other witnesses of the weekend stabbings.
Raleigh police say the shooting happened on Thelma Street Monday afternoon.
Investigators said the incident was not random and involved people who knew each other.