A Fourth of July celebration in Atlanta’s Pittsburgh neighborhood ended in tragedy when 23-year-old Stephen Murphy was shot and killed on the evening of Saturday, July 4, 2015. Murphy’s body was found by police in a wooded area of a vacant lot off Garibaldi Street near Pittman Park, where a birthday party had been underway and many people were gathered.

Investigators said the shooting did not appear random and believed Murphy knew his assailant. Witnesses provided a description of a suspect, but the gunman had fled before officers arrived and no name was released at the time. The community held a prayer walk on Garibaldi Street in the days afterward to mourn Murphy, a father of three, and to call for an end to neighborhood violence.

If anyone has information about what happened that night or knew Stephen, please come forward with tips.