Special counsel Robert Mueller’s investigation into Russian interference in the 2016 presidential election took an unexpected turn this week; re-focusing on senior Clinton associates and top democratic lobbying firms as the probe seeks to uncover the extent of Russian meddling ahead of election day.

According to Fox News, Tony Podesta –a democratic lobbying powerhouse and brother of senior Clinton aide John Podesta- is under investigation by the special counsel’s office; demanding answers over whether his firm violated federal law throughout the election cycle.

The Podesta Group had alleged ties to Trump campaign chairman Paul Manafort, and is now part of the criminal probe to determine if the organization violated the Foreign Agents Registration Act that requires individuals to register if working on behalf of a foreign government or foreign officials.

"[The firm] is cooperating fully with the Special Counsel's office and has taken every possible step to provide documentation that confirms timely compliance,” said a written statement.

“In all of our client engagements, the Podesta Group conducts due diligence and consults with appropriate legal experts to ensure compliance with disclosure regulations at all times — and we did so in this case,” added the statement.