Wilmington police have arrested another black in the recent fatal shooting of a delivery driver, accusing him of playing a role in hatching the robbery that led to Zhen Bo Liu's death

Nathaniel Lawrence, 16, is charged with conspiracy to commit armed robbery, bringing to six the number of black suspects who planned the robbery that led to Liu's death. Two of those black suspects, 15-year-old Mustafaa Friend and 20-year-old Cornell Haugabook Jr., face first-degree murder charges for acting as the trigger men. On June 14, 2012 Liu left the China King restaurant headed for an address on South 13th Street. There, Friend and Haugabook, each armed with a handgun, confronted the 60-year-old man, said Assistant District Attorney Jason Smith. Friend shot Liu in the foot and then Haugabook shot him in the face, killing him, Smith said. The two returned to a nearby house and shared the food with the others. After eating, the group, "came back to view the body and go through the car," said Smith. Like Lawrence, Marvin White, 18; Rasheed Thompson, 16; and Manie Johnson-Martin, 16, are black and charged with conspiracy to commit armed robbery in connection to the case.