General Spínola was dismissed by Dr. Marcelo Caetano, the last prime minister of Portugal under the Estado Novo regime, over the general's publicly announced desire to open negotiations with the PAIGC in Portuguese Guinea. The dismissal caused considerable public indignation in Portugal, and created favorable conditions for a military overthrow of the existing regime, which had lost all public support. On 25 April 1974 a military coup organized by left-wing Portuguese military officers, the Armed Forces Movement (MFA), overthrew the Estado Novo regime in what came to be known as the Carnation Revolution in Lisbon, Portugal.