Train 904 bombing
The Train 904 bombing (Italian: Strage del Rapido 904), also referred to in Italy as the Christmas Massacre (Italian: Strage di Natale), was a terrorist attack by the Sicilian Mafia which occurred on 23 December 1984 in the Apennine Base Tunnel. A bomb detonated on the express train Rapido 904 from Naples to Milan, killing 16 and wounding 266.