The slain bodies of Carlo Alberto Dalla Chiesa, his wife Emanuela Setti Carraro and the agent Domenico Russo in the car
On May 1, 1982, Dalla Chiesa was appointed as prefect for Palermo to stop the violence of the Second Mafia War. He was murdered in Palermo on September 3, 1982, on the orders of Mafia boss Salvatore Riina. He and his second wife were being driven through the city at night in a Lancia A112, when a number of gunmen on motorbikes and a car forced the car off the road where it crashed into a stationary vehicle. The gunmen opened fire and Dalla Chiesa was killed along with his wife and their driver. The lead killer was Giuseppe Greco, who was later convicted in absentia of the crime at the Maxi Trial. A number of other gunmen were involved, including twenty-one-year-old Giuseppe Lucchese, who was also convicted of the crime at the Maxi Trial. Riina and various other Mafia bosses, such as Benedetto Santapaola, were subsequently convicted for ordering the killing.
Dalla Chiesa was also investigating the death of Mauro de Mauro, a journalist who had himself been investigating the murder of Enrico Mattei, head of Agip, the Italian oil company.