After initially locking up more than 170 people in connection with the May 17 incident outside Twin Peaks restaurant, McLennan prosecutors have not charged anyone with the shooting deaths of nine people. [...] defense attorneys suggested the district attorney's office eventually plans to dismiss charges against at least some defendants. Investigators have not yet offered details about who shot who or whether police officers fatally shot anyone, though reports reviewed by The Associated Press indicate police bullets did hit at least one biker.