 At the time he was bankrupt, because his frozen-meat business had failed.He needed to lend money to invest in heroin shipments.During the Second Mafia War — when the Corleonesi Mafia clan of Salvatore Riina and Bernardo Provenzano attacked the established Mafia families of Palermo — the Corleonesi killed Contorno's boss, Stefano Bontade, in April 1981.