Teenager charged in fatal shooting in Muskegon
Zamarian Cooper was killed Aug. 17 in an alley between Smith and Wood streets, just blocks away from his home.
On Friday, 17-year-old Ty Purnell was arraigned on an open murder charge in the shooting.
Prosecutors say Purnell was one of several shooters who killed Cooper, who was an innocent bystander.
Family members say Cooper was there because his sister went to the party and he was worried about her.