The Ambrosiano was a national (domestic) Italian express train which connected Rome with Milan.
The Banco Ambrosiano scandal, Roberto Calvi's "suicide," and charges of mishandling state secrets concerned with the 1980 Bologna bombing, made Pazienza a fugitive from Italian law.
In July 1991 the Mafia pentito (a mafioso turned informer) Francesco Marino Mannoia claimed that Roberto Calvi – nicknamed "God's banker" because he was in charge of Banco Ambrosiano, in which the Vatican Bank was the main share-holder – had been killed in 1982 because he had lost Mafia funds when the Banco Ambrosiano collapsed.