He wrote a lot of books including Yo Lo Viví, Memorias Inconclusas, and Pasión Guerrilla.
Giusti called for an investigation into the incident and possible links to his reports on the presence of the government of Hugo Chávez and Colombian guerrillas in Venezuela.
While interviewing him, Commander Alexis admitted to killing eight members of the Venezuelan Marine Corps in the famous Cararabo Massacre in 1995.
He then passed the border to Colombia to interview Raul Reyes an important FARC member.
Giusti later found a Colombian Guerrilla camp in Venezuela and reported it through the El Universal newspaper.