NBC News first reported that Podesta and his Democratic lobbying firm are now subjects in the special counsel's Russia investigation, after inquiries regarding former Trump campaign chairman Paul Manafort's finances.

The Podesta Group was co-founded by Tony and his brother John Podesta, who is a longtime Clinton aide and served as chairman of her 2016 presidential campaign.

According to Monday's NBC News report, Manafort organized a PR campaign for a pro-Ukraine nonprofit called the European Centre for a Modern Ukraine (ECMU), which reportedly was backed by a pro-Russia party. The Podesta Group reportedly was one of many firms that worked on the campaign.