The 1989 Panamanian coup d'état attempt was a failed coup d'état which occurred in Panama City on 3 October. The attempt was led by Major Moisés Giroldi, supported by a group of officers who had returned from a United Nations peacekeeping mission in Namibia. Although the plotters succeeded in capturing Panamanian dictator Manuel Noriega, the coup was quickly suppressed. Giroldi, together with nine other members of the Panamanian Defense Forces, was executed on 3 and 4 October 1989. Two hundred fifty participant died in prison after being tortured. These events became known as the "Albrook massacre".