Late last night, Fox News senior correspondent Adam Housley sent out a pair of tweets regarding the “unmasking” of private citizens associated with Trump:

According to Housley and his colleague Malia Zimmerman, these associates’ “communications apparently were caught up in surveillance under the Obama administration.”

This afternoon on Twitter, Housley went into more detail:

More from Fox News:

The U.S. intelligence official who “unmasked,” or exposed, the names of multiple private citizens affiliated with the Trump team is someone “very well known, very high up, very senior in the intelligence world,” a source told Fox News on Friday.

Intelligence and House sources with direct knowledge of the disclosure of classified names told Fox News that House Intelligence Committee Chairman Devin Nunes, R-Calif., now knows who is responsible — and that person is not in the FBI.

“Unmasking is not unprecedented, but unmasking for political purposes … specifically of Trump transition team members … is highly suspect and questionable,” an intelligence source told Fox News. “Opposition by some in the intelligence agencies who were very connected to the Obama and Clinton teams was strong. After Trump was elected, they decided they were going to ruin his presidency by picking them off one by one.”

You can watch video of Housley’s report here.

Housley would also like to clear things up for anyone questioning his motivations: