A former US diplomatic officer has been arrested and charged with giving top-secret documents to a Chinese agent.
According to an affidavit, Kevin Mallory, a 60-year-old from Virginia, is said to have travelled to Shanghai in March and April 2017.
He also failed to declare $16,500 (£13,000) in cash found in two carry-on bags when travelling through Chicago airport, said the Associated Press.
Under the federal Espionage Act, he could face life in prison.
The FBI has confirmed he was entrusted with high-level clearance when working for the government.