Report: NSA surveillance disrupted 'dozens' of terror plots

The network reported that officials said in a statement that of the hundreds of millions of records related to phone calls collected last year, only 300 were “queried” for more information about callers after officials found a “reasonable suspicion” that the caller was “associated with specific foreign terrorist organizations.”

NBC said the statement was cleared for release after requests by Sen. Dianne FeinsteinDianne Emiel FeinsteinGrassley blasts Democrats over unwillingness to probe Clinton Avalanche of Democratic senators say Franken should resign Blumenthal: ‘Credible case' of obstruction of justice can be made against Trump MORE (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.