The 1977 Massacre of Atocha was a neo-fascist attack during the Spanish transition to democracy after Franco's death in 1975, killing five and injuring four. It was committed on January 24, 1977 in an office located on 77 Atocha Street near Atocha railway station in Madrid, where specialists of labor law, members of the Workers' Commissions trade union (CCOO), and of the then clandestine Communist Party of Spain (PCE), had gathered. The next day, the massacre was revindicated by a group calling itself Alianza Apostólica Anticomunista (Triple A or AAA).