Guardian Report: Source Claims ‘Concrete’ Evidence Of Collusion Between Trump Associates And Russia

A recent report by The Guardian, citing an anonymous source, notes that U.S. investigators have “concrete” evidence of collusion between Trump associates and Russia.

According to a recent report by The Guardian, U.S. investigators have “concrete” evidence of collusion between Trump associates and Russia. 
The newspaper quotes an unnamed source as saying, “They now have specific concrete and corroborative evidence of collusion...This is between people in the Trump campaign and agents of [Russian] influence relating to the use of hacked material.” 
According to Slate, this news is a “bombshell because evidence that Trump advisers were involved in any way with the release of hacked Hillary Clinton-related emails would be an impeachment-level smoking gun in a scandal that currently involves a lot of reports about sketchy relationships but no proof of clearly illegal conduct.” 
The Guardian piece also cites a source as saying the British spy agency GCHQ was the “principal whistleblower” in helping to prompt an FBI investigation into possible ties between Trump associates and Russia. 
A CNN report echoes this finding based on accounts from numerous insiders, with the news outlet saying that European intelligence agencies--including the GCHQ--had notified their U.S. counterparts about communications that had been uncovered between the two groups during the campaign. 
However, the sources pointed out that Trump associates were not targeted in a sweep. Their communications happened to get collected as part of other operations. 
Meanwhile, the White House has continued to deny any Trump-Russia connection, with the president himself calling the claim “FAKE NEWS.”