Update: An American army veteran has been identified as a - lone - gunman in The Dallas police shooting. Dallas Mayor Rawlings confirmed today what law enforcement officials had told NBC News earlier, Micah Xavier Johnson was the lone gunman in the rampage. The killer - Micah Xavier Johnson was killed by an explosive device attached to a robot after talks broke down.Update: An American army veteran has been identified as a - lone - gunman in The Dallas police shooting. Dallas Mayor Rawlings confirmed today what law enforcement officials had told NBC News earlier, Micah Xavier Johnson was the lone gunman in the rampage. The killer - Micah Xavier Johnson was killed by an explosive device attached to a robot after talks broke down.
{}