[1][2][3][4][5][page needed] The Italicus Express was a night train of the Ferrovie dello Stato on which, during the early hours of 4 August 1974, a bomb exploded, killing 12 people and injuring 48.

The train was traveling from Rome to Munich; having left Florence about 45 minutes earlier, it was approaching the end of the long San Benedetto Val di Sambro tunnel under the Apennines.

[6] Aurelio Fianchini, a leftist militant who had just escaped from prison, told the press that the bomb was placed in the Italicus Express by Mario Tuti's subversive commando unit: Piero Malentacchi (who had planted the explosive at the Firenze Santa Maria Novella railway station), Luciano Franci and Margherita Luddi.

A few months after the Italicus bombing, a woman declared to judge Mario Marsili—son-in-law of Licio Gelli of the Masonic lodge Propaganda Due—that the author of the massacre was Tuti.

[3][7] Tuti was sentenced to a 20-year prison term for two bomb attacks that had occurred on 31 December 1974 and in January 1975, illegal possession of explosives and firearms and for promoting and organizing the reconstruction of the Fascist Party.