During the course of the investigation against her, it was determined that Montes had passed a considerable amount of classified information to the Cuban Intelligence Directorate, including the identities of four US spies in Cuba. In 2007, American DIA counterintelligence official Scott W. Carmichael publicly alleged that it was Ana Montes who told Cuban intelligence officers about a clandestine US Army camp in El Salvador. Carmichael alleged that Montes knew about the existence of the Special Forces camp because she visited it only a few weeks before the camp was attacked in 1987 by Cuban-supported guerrillas of the Farabundo Martí National Liberation Front (FMLN).