A former US Navy sailor has been sentenced to 30 years in prison for attempted espionage.
A federal court in Norfolk, Virginia, said Robert Hoffman, 40, passed secret information to people he believed were Russian spies.
They were actually FBI agents working underEx navy man sentcover.
Prosecutors said Hoffman, a former cryptologist technician on submarines, had given secret files about tracking ships.
He was arrested in December 2012 and found guilty in August last year.
