Harris , who is asking a federal court in Los Angeles to dismiss Sirhan 's request , conceded in court papers filed Wednesday that his lawyers may be able to show two guns were involved in Kennedy 's assassination . Convicted assassin Sirhan Sirhan asserts a second gunman killed Robert F. Kennedy . Sirhan was hypno - induced to use a gun as a diversion , his attorney says . California 's attorney general says a jury would have convicted him anyway . The evidence against him is ` ` overwhelming , '' prosecutor says .
Convicted assassin Sirhan Sirhan asserts a second gunman killed Robert F. Kennedy . Sirhan was hypno - induced to use a gun as a diversion , his attorney says . California 's attorney general says a jury would have convicted him anyway . The evidence against him is ` ` overwhelming , '' prosecutor says .