The Piazza Fontana Bombing (Italian: Strage di Piazza Fontana) was a terrorist attack that occurred on December 12, 1969, when a bomb exploded at the headquarters of Banca Nazionale dell'Agricoltura (National Agrarian Bank) in Piazza Fontana (some 200 metres from the Duomo) in Milan, Italy, killing 17 people and wounding 88. The same afternoon, three more bombs were detonated in Rome and Milan, and another was found unexploded.