Ciaculli bombing: a car bomb, intended for Mafia boss Salvatore Greco, kills seven police officers and military personnel near Palermo.

The Ciaculli massacre on 30 June 1963 was caused by a car bomb that exploded in Ciaculli, an outlying suburb of Palermo, killing seven police and military officers sent to defuse it after an anonymous phone call. The bomb was intended for Salvatore "Ciaschiteddu" Greco, head of the Sicilian Mafia Commission and the boss of the Ciaculli Mafia family. At first, mafia boss Pietro Torretta was considered to be the instigator behind the bomb attack, but it was eventually found to be Michele Cavataio.

A car bomb, bus bomb, van bomb, lorry bomb, or truck bomb, also known as a vehicle-borne improvised explosive device (VBIED), is an improvised explosive device designed to be detonated in an automobile or other vehicles.

The Sicilian Mafia or Cosa Nostra, also simply referred to as Mafia, is a criminal society and criminal organization originating on the island of Sicily and dates back to the mid-19th century. Emerging as a form of local protection and control over land and agriculture, the Mafia gradually evolved into a powerful criminal network. By the mid-20th century, it had infiltrated politics, construction, and finance, later expanding into drug trafficking, money laundering, and other crimes. At its core, the Mafia engages in protection racketeering, arbitrating disputes between criminals, and organizing and overseeing illegal agreements and transactions.

Salvatore "Ciaschiteddu" Greco was a powerful mafioso and boss of the Sicilian Mafia in Ciaculli, an outlying suburb of Palermo famous for its citrus fruit groves, where he was born. His nickname, "Ciaschiteddu" or "Cicchiteddu", translates from the Sicilian alternatively as "little bird" or as "little wine jug".