The US has charged a pair of former nuclear contractors with attempting to leak nuclear secrets to Venezuela.
The husband and wife team were arrested on Friday in New Mexico and accused of passing nuclear information to an FBI agent posing as a Venezuelan spy.
US citizens Pedro and Marjorie Mascheroni were contractors at Los Alamos National Laboratory, a centre of US nuclear research.
The US justice department did not accuse Venezuela of wrongdoing.
"The conduct alleged in this indictment is serious and should serve as a warning to anyone who would consider compromising our nation's nuclear secrets for profit," Assistant Attorney General David Kris said in a statement.
BBC News
