WASHINGTON — The workplace of the Nationwide Safety Company’s inspector basic mentioned on Tuesday that it will examine a declare by the Fox Information character Tucker Carlson that the surveillance company “has been monitoring our digital communications and is planning to leak them in an effort to take this exhibit the air.”

The company has denied the allegation. The workplace of its impartial watchdog, Rob Storch, announced that it was “conducting a evaluate associated to current allegations that the N.S.A. improperly focused the communications of a member of the U.S. information media.”

Mr. Carlson made his eyebrow-raising declare throughout his June 28 prime-time broadcast, saying he had realized of the matter from “a whistle-blower throughout the U.S. authorities.” The accusation carried echoes of conspiracy theories put ahead by former President Donald J. Trump, with whom Mr. Carlson is carefully aligned, a few so-called deep state out to get him.

“The N.S.A. captured that data with out our information and did it for political causes,” Mr. Carlson told his viewers. “The Biden administration is spying on us. We’ve got confirmed that.”

Whereas the N.S.A. hardly ever feedback on allegations about its actions, the accusation prompted a rare public denial from the company, which known as it “unfaithful” and mentioned “Carlson has by no means been an intelligence goal of the company and the N.S.A. has by no means had any plans to attempt to take his program off the air.”

That rigorously worded assertion, nevertheless, left open the chance that the company could have by the way swept up some communications of or about Mr. Carlson because it carried out surveillance of foreigners for intelligence functions, with out deliberately focusing on him as a part of any nefarious plot to take his program off the air.

In early July, it emerged that Mr. Carlson had been making an attempt to safe an interview with Russia’s president, Vladimir V. Putin. However in making his accusation, Mr. Carlson had not disclosed to his viewers that he had been reaching out to the Russian authorities through Kremlin intermediaries on the time.

That context was essential. If the Nationwide Safety Company, as a matter of routine international intelligence-gathering, had been focusing on a Kremlin-linked Russian who interacted with Mr. Carlson, the company would have by the way gathered the communications between its goal and the Fox Information host with out having got down to intercept any of Mr. Carlson’s non-public messages and with out monitoring what he was saying to anybody else.

Equally, if the company had been focusing on a authorities official in Russia who talked about Mr. Carlson’s outreach with the middleman he had spoken to or with anybody else, then it will have picked up details about what Mr. Carlson was saying on that matter from such discussions about him.

After Axios reported on July 7 that Mr. Carlson had been reaching out to Kremlin intermediaries a few potential interview with Mr. Putin, Mr. Carlson acknowledged that context to his viewers on his present that night. However he then pivoted to a brand new accusation, saying he had simply realized the day earlier than that “sources within the so-called intelligence group instructed no less than one reporter in Washington what was in these emails.”

Underneath guidelines meant to reduce the invasion of Individuals’ privateness from nationwide safety surveillance actions, if the Nationwide Safety Company places details about Individuals into intelligence reviews it shares with different companies, it’s purported to “masks” the Individuals’ identities — like substituting “U.S. Particular person 1” for a reputation. However officers could use Individuals’ names, or request an unmasking of their identities, if understanding them is important to know the intelligence.

“I used to be unmasked,” Mr. Carlson declared. “Individuals within the constructing realized who I used to be after which my title and the contents of my emails left that constructing on the N.S.A. and wound up with a information group in Washington.”

Mr. Carlson didn’t clarify whether or not he was referring to Axios, whose report about his outreach to the Kremlin had cited solely “sources accustomed to the conversations” and didn’t say whether or not these sources had been American authorities officers or others who knew about it.