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Scientist jailed for 5 years in US nuclear weapons spy sting

A former Los Alamos National Laboratory scientist has been sentenced to five years in prison for passing classified US nuclear weapons data to a person he believed to be a Venezuelan government official, the FBI said.

Pedro Leonardo Mascheroni, 79, a naturalized US citizen from Argentina, pleaded guilty in June 2013 to several espionage-related offenses. Credit: Leslie Woodhead/Eye Ubiquitous/Press Association Images

Pedro Leonardo Mascheroni, 79, a naturalized US citizen from Argentina, pleaded guilty in June 2013 to several espionage-related offenses. His wife, who is 71, was previously sentenced to a year in prison for her role in the same case, according to the FBI.

The pair believed they were dealing with a Venezuelan representative but were actually in contact with an undercover FBI agent.