sentences:  Since 1983, Gambino sat on the Sicilian Mafia Commission and was a close confidant of Totò Riina.Gambino was involved in the killing of Antimafia magistrates Giovanni Falcone and Paolo Borsellino, as well as the politician Salvo Lima in 1992, and businessman Libero Grassi who opposed extortion by the Mafia.He was arrested and committed suicide in the San Vittore prison in Milan on November 30, 1996.