There were also allegations that the KGB was behind the assassination attempt against Pope John Paul II in 1981. The Italian Mitrokhin Commission, headed by senator Paolo Guzzanti (Forza Italia), worked on the Mitrokhin Archives from 2003 to March 2006. The Italian Mitrokhin commission received criticism during and after its existence. It was closed in March 2006 without any proof brought to its various controversial allegations, including the claim that Romano Prodi, former Prime minister of Italy and former President of the European Commission, was the "KGB's man in Europe." One of Guzzanti's informers, Mario Scaramella, was arrested for defamation and arms trading at the end of 2006.