On June 30, 1963 a car bomb exploded near Grecos' house in Ciaculli, killing seven police and military officers sent to defuse it after an anonymous phone call. The outrage over the Ciaculli Massacre changed the Mafia war into a war against the Mafia. It prompted the first concerted anti-mafia efforts by the state in post-war Italy. The Sicilian Mafia Commission was dissolved and of those mafiosi who had escaped arrest many went abroad. Even the old Piddu Greco was arrested in October 1965, and send into internal banishment from Sicily in May 1966.