There were multiple reports linking Cartaya with Fidel Castro. His aide Aldereguia-Ors was found by the FBI on his arrest on charges of preparing Cartaya a fake passport (in Miami International Airport en route to Kingston, Jamaica) to possess in his briefcase a letter 'from a Cuban secret police agent' addressed to a spy named "Samuel". Ors admitted fighting with Castro, and to helping Rebel Army friends find jobs at WFC, but he denied being the Cuban spy Samuel, and claimed the letter & his planned meetings with Cuban officials referred to 'an effort to bring refugees out of Cuba to the United States'. FBI agents would testify in court that besides the letter, the briefcase contained 'operational instructions from a foreign country'.