On Tuesday, Bill O'Reilly pressed Sen. Tom Cotton (R-Ark.) on whether he knew which U.S. intelligence service ordered the wiretapping of former National Security Advisor Michael Flynn's conversation with a Russian envoy.

Cotton, a member of the Senate Intelligence Committee, said on "The O'Reilly Factor" that he cannot disclose classified matters or materials.

"I am aware of and follow closely what our intelligence agencies do," Cotton said.

Flynn was reportedly in Trump Tower in Manhattan, N.Y. when the conversation took place. The tower is also the site of alleged wiretaps brought up in a well-publicized series of tweets by President Trump over the weekend.

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O'Reilly told Cotton that response likely means he knows which agency may have surveilled Flynn's now-infamous conversation with Ambassador Sergey Kislyak.

He pressed Cotton as to whether he agreed that since he likely knows the agency's identity, it narrows-down the location of the person who leaked the call to the media earlier this year.

Cotton replied that while he could not elaborate on the topic, there have been media reports of Obama administration officials raising information about similar cases in meetings "where they may not have been appropriate."

Cotton said it could be helpful to examine "partisan Democrats" who have been reported in news coverage as anonymous "former officials."

He explained that they could then possibly work backward to find the people responsible for the leaks.

"These leaks, regardless of the contents, are damaging to national security and raise the prospect of serious criminal behavior," he said.

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