Between 1992 and 1993, prosecutors of Milan arrest and investigate many managers and politicians, causing the collapse of political-institutional system born after World War II.
Since 1992, various prosecutor's offices (particularly those in Naples and Venice) arrest many local politicians and entrepreneurs, following the example of Milan prosecutor's office.
In 1994, Silvio Berlusconi becomes Prime Minister and later is investigated by the prosecutors of Milan for corruption. On December 6, Antonio Di Pietro resigns from the judiciary, while on December 22, Berlusconi resigns as Prime Minister.