Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE and Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE, the special counsel investigating Russian interference in U.S. elections, passed within feet of each other at Washington's Reagan National Airport (DCA), apparently without either of the men noticing.

The random moment was captured on camera by a photographer for Politico Playbook, and quickly went viral on Twitter.

Spotted: Robert Mueller and Donald Trump Jr. both waiting for their flights this morning at the 35X gate at DCA. And yes, there is a photo. https://t.co/gKUSO7QhOU pic.twitter.com/tvcoyLMnDW — POLITICO (@politico) July 27, 2018

The two were both spotted waiting near gate 35X in the airport, with Mueller wearing a suit while Trump Jr. was clad in a teal polo shirt. It's unclear if the men were on the same flight.

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A spokesman for the special counsel's office told The Washington Post that Mueller was indeed at the airport, but had no knowledge of Trump Jr.'s presence. Meanwhile, Trump Jr. separately confirmed to the Daily Mail that he "didn't notice" Mueller in the terminal.

"If it’s accurate that the other person in the photo was Donald Trump Jr., Mr. Mueller was not aware of him and had no interaction with him," the special counsel's office told the Post.

A spokesman for the special counsel confirms this is Mueller, waiting to board a flight. He adds, "If it’s accurate that the other person in the photo was Donald Trump Jr., Mr. Mueller was not aware of him and had no interaction with him." https://t.co/blvQEmsBsL — Matt Zapotosky (@mattzap) July 27, 2018

The coincidental passing by of the two men at DCA comes just a day after CNN reported that President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE's former attorney Michael Cohen is claiming that Trump had prior knowledge of the June 2016 Trump Tower meeting between Trump campaign officials including Trump Jr. and a Russian lawyer — and is willing to discuss it with members of the Mueller investigation team.