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"One of the first things the businessman noticed about Luis Posada Carriles was that he spoke funny. Posada, who mumbled because of an old bullet wound in his jaw, frequently visited the businessman's Guatemala utility company in 1997 to meet with two co-workers.
The businessman grew suspicious after one of the workers told him about Cuban exile plans to assassinate Fidel Castro and after a Venezuelan politician confided that Posada, a CIA-trained explosives expert, was a ``very dangerous individual.''
Concerned that Posada was using his utility business to plot illicit activities, the businessman hid a transmitter in an office and overheard the two co-workers talk with Posada about placing a ''putty-like explosive'' in the shoes of Central Americans paid to pose as tourists on trips to Cuba.
Soon afterward, the businessman became a ''confidential source'' for the FBI's investigation into bombs that exploded at Cuban tourist sites in 1997, killing an Italian and wounding seven others.
The businessman, a Cuban-American engineer who set up the utility company in Guatemala City in 1996, could turn out to be the central figure in the Justice Department's rekindled criminal investigation of Posada. The probe is back on track -- despite the fact that the FBI field office in Miami destroyed evidence in 2003 about the initial Cuba bombing case."
http://www.miami.com/mld/miamiherald/15990057.htm