 Such threats were heightened when , on March 4 , 1960 , two massive explosions ripped through the French freighter La <unk> , which was carrying Belgian munitions from the port of Antwerp , and was docked in Havana Harbor . The blasts killed at least 76 people and injured several hundred , with Guevara personally providing first aid to some of the victims . Cuban leader Fidel Castro immediately accused the CIA of " an act of terrorism " and held a state funeral the following day for the victims of the blast . It was at the memorial service that Alberto Korda took the famous photograph of Guevara , now known as Guerrillero Heroico . 
