That might not be true. The autopsies of Anselmi, Scalise and Giunta show that they were beaten and shot to death. They were probably knocked down to the floor and kicked before they were shot. There's no proof a baseball bat was used. As for who did it, it's probable that Frank Rio was one of them and maybe Tony Accardo. Some think he got the label "Joe Batters" from this incident, but others think he earned that nickname earlier. Nobody ever talked, so we don't know who was personally involved.