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Retired Gen. James Cartwright Target in Leak Probe, Source Says

MANDEL NGAN/AFP/Getty Images(WASHINGTON) -- Retired Gen. James Cartwright, the former vice chairman of the U.S. Joint Chiefs of Staff, is the target of a Justice Department investigation into the leak of classified information included in a book by New York Times correspondent David Sanger, a source tells ABC News.

Published in mid-2012, Sanger's book, Confront and Conceal, and a New York Times article adapted from the book, included revelations about the Stuxnet computer virus that was part of a covert U.S.-Israeli cyberattack to sabotage Iran's nuclear enrichment program.

Cartwright served as the vice chairman of the Joint Chiefs of Staff from 2007 to 2011.  Prior to that, the Marine general had been in command of U.S. Strategic Command.

A source familiar with the case confirms that Cartwright is the target of a year-long Justice Department investigation into the leaks of classified information included in Sanger's book and article.

"He is the target of the investigation," says the source.

The Stuxnet virus was part of a highly classified covert program known as "Olympic Games" that used computer code to successfully target Iranian nuclear enrichment facilities to delay that country's efforts to potentially develop a nuclear weapon.  The revelations sparked outrage from lawmakers and triggered a Justice Department probe into who had been behind the leaks included in the book.

NBC News was first to report that Cartwright was the focus of a criminal probe of the leaks.  The source could not confirm the NBC report that Cartwright is specifically being targeted for a leak of information about the Stuxnet computer virus that was first revealed in Sanger's book.

ABC News confirmed that prominent Washington attorney Greg Craig is representing Cartwright in regards to a Justice Department matter, but when contacted, Craig declined to comment on the report that Cartwright is the subject of the leaks probe. 

Cartwright retired from the Marine Corps in August 2011.  He now serves as the Harold Brown Chair in Defense Policy Studies at the Center for Strategic and International Studies, a Washington think-tank.  He is also a defense consultant for ABC News.

Government officials referred questions to the U.S. Attorney's Office in Maryland, which has been conducting the leak investigation of Sanger's book.  That office declined to comment.

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