The shooting happened around 9:45 p.m. in an alley near Haster Street and East Wakefield Avenue. Police have not said what prompted the officer-involved shooting. No officers were injured.
Police said they're searching for a second suspected gang member who was with the gunman. Officers first responded to the scene after reports that several people were gathered in the alley.
Anyone with information was asked to contact Anaheim police at (714) 765-1900.