By Kyle Balluck - 06/16/13 02:21 AM EDT
NBC said the statement was cleared for release after requests by Sen. Dianne Feinstein (D-Calif.), who wanted to show the effectiveness of the surveillance programs.
Testifying before the Senate Appropriations Committee earlier this week, NSA chief Keith Alexander cited Najibullah Zazi’s plot to bomb New York’s subways in 2009 as one of many foiled attacks on the nation.
His case was the only example of a thwarted terrorism plot cited in Saturday’s statement.
The "operational details" of other plots disrupted "must remain secret to allow us to continue to effectively leverage our capabilities in the face of those who still aspire to do great harm to our citizens and allies," the statement said, according to NBC.