Transcript for Retired General at Center of Leak Investigation
Now, to the leak in washington. The nation's former second-ranking military officer, the center of a firestorm. Accused of leaking classified information. Abc's pierre thomas has been following this story all night long. Pierre, good morning. Reporter: Good morning, amy. We learned that top senior officials, one-time second-ranking officer at the pentagon, now finds himself at the top of a leak investigation. Retired general james cartwright of the marines is suspected of information about a cyber attack against iran's nuclear program. The disclosure revealed in a book by "new york times" correspondent david sanger. Cartwright's attorney declined to comment, as did the justice department. The implications of this case are potentially huge because cartwright was such a senior official. He served as the vice chairman of the joint chiefs of staff from 2007 to 2011. We've been talking about quite a few leaks during this administration. Snowden comes to mind. There's been many others, as well. Reporter: You're right. There's been a barrage of leaks. The obama administration has prosecuted or charged double the amount or suspects of the previous administration in terms of leaks.
This transcript has been automatically generated and may not be 100% accurate.