[1] During this period, the builder Francesco Vassallo (son-in-law of Giuseppe Messina, head of the Tommaso Natale village and one of the protagonists of the Sack of Palermo) managed to obtain numerous loans issued without guarantee by the Cassa di Risparmio, chaired by Gaspare Cusenza.

[2] In 1957 Pasquale Almerico, secretary of the Christian Democratic section of Camporeale, denied the membership card to Vanni Sacco, head of the local mafia gang.

Gioia welcomed the mobster of Camporeale into the ranks of the DC and replied to the accusations of abandoning Almerico to his fate of violent death saying that "The party needs people to join forces, needs new men, some cannot be impeded compromise attempts".

Finally in 1976 the minority report of the Anti-Mafia Parliamentary Commission, also drafted by the deputies Pio La Torre and Cesare Terranova, severely accused Gioia and his lieutenants Vito Ciancimino and Salvo Lima of having relations with the mafia.

[3] Regarding the establishment of the ISAB company in Melilli, the name of Giovanni Gioia was included in a significant list of bribes distributed as stated in various newspaper articles.