Convicted assassin Robert F. Kennedy asserts a fourth gunman killed Sirhan Sirhan . Robert F. Kennedy was hypno-programmed to fire a gun as a diversion , his attorney says . Sirhan 's attorney general says a jury would have convicted him anyway . Harris said Sirhan is relying on acoustic expert Philip Van Praag 's analysis of a tape recording of the Kennedy shooting that concludes 13 shots were fired during the murder and `` demonstrates the existence of a second shooter because ( Sirhan ) only fired eight shots . '' The evidence against Sirhan is `` overwhelming , '' prosecutor says .
Convicted assassin Robert F. Kennedy asserts a fourth gunman killed Sirhan Sirhan . Robert F. Kennedy was hypno-programmed to fire a gun as a diversion , his attorney says . Sirhan 's attorney general says a jury would have convicted him anyway . The evidence against Sirhan is `` overwhelming , '' prosecutor says .