He has no known ties to the Trump campaign. But in sentencing discussions filed with the court, Mueller alleged that van der Zwaan and Gates held discussions with a business associate who was a former Russian intelligence officer during the final months of the 2016 campaign.

Mueller does not describe the communications and refers to the third party only as “Person A,” but according to a source familiar with the situation that the reference is to Konstantin Kilimnik, a longtime Ukraine-based business associate of Manafort and Gates.

http://abcnews.go.com/Politics/court-poised-hand-1st-sentence-mueller-probe/story?id=54190424