According to Andrew Scoppa, the Callocchia murder was ordered by Steve Sollecito and carried out by Salvatore Scoppa and a gang member.

Prior to this, Callocchia had killed Joe Di Maulo with Vito Rizzuto's permission. Callocchia and Sollecito then pressured Rizzuto for permission to have Roger Valiquette killed because they wanted control of the Book. Valiquette had been previously been encouraged by Sollecito and Callocchia to take the Book from the jailed Lorenzo Giordano. Scoppa describes Sollecito, Callocchia, and Valiquette at that time as the three men who were calling the shots for Rizzuto and pressuring him to have certain people killed (like Gaétan Gosselin and Vincenzo Scuderi). They used their victims' affiliations with the likes of Raynald Desjardins and Giuseppe De Vito as excuses to have them killed, but really the murders were motivated by a desire to take over their loan sharking operations. Sollecito and Callocchia turned on Valiquette when he began pressuring them to repay money he had loaned out to them (several hundred thousand dollars each).