Cantanzaro, April 4 - A supposed kidnapping plot in the 1970s targeting ex-premier Silvio Berlusconi by the Calabrian 'Ndrangheta mafia was reportedly halted by the Sicilian Mafia, an article to be published on Friday in the newspaper Corriere della Calabria says. "The pact signed between Calabrians and Sicilians was poorly digested by some clans and caused a rift at the top of the 'Ndrangheta, which had serious repercussions in later years," the article says. "To prevent Berlusconi's kidnapping, the Masons were called in and an important meeting to settle the deal with the Sicilians was held in Milan," says the piece. In March, former Berlusconi aide Senator Marcello Dell'Utri of the ex-premier's People of Freedom (PdL) party was sentenced to seven years in jail by a Palermo court for Mafia collusion. Prosecutors say he was the intermediary with Cosa Nostra bosses Francesco Di Carlo, Stefano Bontade and Mimmo Teresi and that they met together with Berlusconi in one of his Milan offices. During the meeting, the deal was sealed for the hire of Vittorio Mangano, later convicted as a Mafioso, who was allegedly employed to protect the future premier and media magnate's family after a wave of kidnappings of industrialists or their children. A court document released by Italy's Supreme Court in April said that there was "no doubt" that ex-premier Silvio Berlusconi met with Mafia bosses in 1974. Dell'Utri has repeatedly called Mangano "a hero" for refusing to say Berlusconi was linked to the Mafia.