A former scientist at the Los Alamos National Laboratory in the US has been sentenced to five years in jail for attempting to pass nuclear bomb-making secrets to Venezuela.
Pedro Leonardo Mascheroni pleaded guilty in 2013 to delivering secrets to an undercover FBI agent, who he thought was a Venezuelan official.
Pedro Mascheroni, who is 79, is originally from Argentina.
His wife was also sentenced to one year in prison.
Mascheroni was under investigation for about a year before he was charged.
The US intelligence agency, the FBI, seized computers, letters, photographs and book from his home.