President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE's former chief of staff Reince Priebus and White House counsel Don McGahn have reportedly both hired a lawyer amid the investigation into Russian election meddling.

The two hired William Burck, a partner at Quinn Emanuel Urquhart & Sullivan LLP, Law360 reported.

Burck will advise Priebus and McGahn in the special counsel investigation into the Russian election meddling.

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The news comes after a recent report that special counsel Robert Mueller told the White House his team will seek to interview six senior and former aides to Trump as part of the federal investigation into the Russian election meddling and possible Trump campaign involvement.

Those aides include Priebus and McGahn, in addition to former White House press secretary Sean Spicer and Trump's adviser and interim communications director Hope Hicks.

McGahn will reportedly be questioned about Trump's firing earlier this year of FBI Director James Comey, according to Law360.

Priebus will be asked about any details he knows surrounding Donald Trump Jr.'s meeting last June with a Russian lawyer, according to the publication.

In the past, President Trump and his aides have repeatedly denied collusion and the president has dismissed the Russia investigation as a witch hunt.