Trump's former National Security Advisor John Bolton transmitted classified emails over a private server system and they were intercepted by a hostile foreign country's spy service, according to a leak to The New York Times.

As reported last week, John Bolton is reportedly under investigation for violating the Espionage Act, according to The New York Times.

"The investigation into whether John Bolton, President Trump's former national security adviser, mishandled classified information is trying to determine if he violated certain sections of the Espionage Act, which makes it a crime to illegally retain or transmit national defense information, according to people familiar with the matter who spoke on the condition of anonymity to discuss details of the case," The New York Times reported.

The FBI raided the home of Trump's former National Security Advisor, John Bolton, last Friday morning.

FBI agents were sent to Bolton's home because he allegedly sent "highly sensitive" classified materials to family members from a private, unsecured email server while he was working at the White House during the first Trump Administration.

"Investigators reopened a dormant probe into Bolton's alleged use of a private email to send classified national security documents to his wife and daughter from his work desk before his dismissal by Trump in September 2019, according to a senior US official," The New York Post reported last week.

The investigation into John Bolton began in 2020 when he used classified information to write his book titled, "The Room Where It Happened."

The Biden Administration halted the investigation into Bolton, but FBI Director Kash Patel revived it and ordered the raid on the former NatSec Advisor's home.

John Bolton has not been arrested or charged with any crimes (yet).

The New York Times on Wednesday reported that the US Government actually discovered John Bolton's classified emails while gathering information from an "adversarial country's spy service."