The day before he announced to reporters that Donald Trump may have been incidentally monitored by U.S. intelligence agencies during the transition, House Intelligence Committee Chairman Devin Nunes met with the source of that information at the White House, a Nunes spokesman told NBC News.



"Chairman Nunes met with his source at the White House grounds in order to have proximity to a secure location where he could view the information provided by the source," said his spokesman, Jack Langer. "The chairman is extremely concerned by the possible improper unmasking of names of U.S. citizens, and he began looking into this issue even before President Trump tweeted his assertion that (Trump Tower) had been wiretapped."

White House spokesman Sean Spicer refused to comment when asked why Nunes was on White House grounds, saying he only knew what Nunes had done based on public statements made to various media outlets.

Former White House officials said it would be easy for anyone working there to determine who signed Nunes into the facility.

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Nunes has declined to say who provided the intelligence reports he referenced, but his admission that he met with his source at the White House is fueling suspicions among Democrats that his source was someone close to Trump.

Nunes told Bloomberg View columnist Eli Lake that his source was an intelligence official and not a White House staffer.

It's unclear why Nunes would have to go to the White House to seek a secure location to view classified material, since his own committee has a secure room in the Capitol where Nunes and his aides review secret documents on a daily basis.