Congressional investigators looking into possible collusion between President Trump's campaign and Russia have uncovered a concerning new email from a senior Trump aide who may have attempted to set up a meeting between top members of his team and Russian President Vladimir Putin, according to a report published Wednesday evening.

White House deputy chief of staff Rick Dearborn emailed fellow senior campaign officials last year about someone named "WV" whom he said wanted to connect them to Putin himself, CNN reported.

It is unknown whether Dearborn acted on the request or if the matter involved West Virginia since WV is the state's abbreviation. The report said an unnamed source thinks "WV" may refer to someone with political ties in West Virginia.

However, the email was sent in June 2016, the same month Donald Trump Jr. had a meeting with a Russian lawyer at Trump Tower.

Trump Jr., who is also under investigation by the special prosecutor, has insisted he took the meeting because he promised damaging information about then-opponent Hillary Clinton.