On July 14th 1969 the ‘Football War’ broke out, the conflict began after El Salvador beat Honduras in a 1970 FIFA World Cup qualifier. The match started a riot which culminated in the war mainly due to underlying tensions between the two latin countries, the causes of the war were economic in nature, namely concerning immigration from Honduras to El Salvador. The war itself began on 14 July 1969, when the Salvadoran military launched an attack against Honduras. The conflict lasted four days and the Organization of American States (OAS) negotiated a ceasefire on the night of 18 July, which took full effect on 20 July. Salvadoran troops were withdrawn in early August. The conflict claimed at least 3000 casualties the majority being Honduran.