By: KDKA-TV News Staff

PITTSBURGH (KDKA) — A couple out of Maryland is facing espionage-related charges after they allegedly tried to exchange confidential data to an FBI agent posing as a foreign official.

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The United States Department of Justice (DOJ) arrested 42-year-old Jonathan Toebbe and his wife, 45-year-old Diana Toebbe, on Saturday in West Virginia.

The DOJ accuses Jonathan Toebbe of attempting to contact a foreign official, who he did not know was actually an undercover FBI agent, about nuclear-powered warships.

Toebbe was a nuclear engineer with the Navy.

Officials allege in April of 2020, he sent a package with some of the restricted data and offered more data in exchange for payment to a foreign government.

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The package had a return address in Pittsburgh.

Over a year, Toebbe allegedly sent SD cards with encrypted data at drop-off locations in multiple states, and the FBI said they discovered data on submarine nuclear reactors on the cards.

They also accuse his wife of acting as a lookout when Toebbe would drop off the SD cards.

The Toebbes will appear in federal court on Tuesday.

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The FBI and Naval Criminal Investigative Service continue to investigate.