On 8 June 1992, after the killing on 23 May of judge Giovanni Falcone by the Corleonesi clan of the Sicilian Mafia in the Capaci bombing, the regime was modified (confirmed in Law no. 356 of 7 August 1992).The new article stipulated that restrictive measures could be implemented when there was "serious concern over the maintenance of order and security." The aim was to prevent association, and therefore the exchange of messages, between Mafia prisoners and to break the chain of command between Mafia bosses and their subordinates.