Prosecutors Ryan Dickey and Brian Richardson are no longer working for Special Counsel Robert Mueller’s office, leaving 15 attorneys left on the team, according to a report by CNN.

Special counsel spokesman Peter Carr said that their departures were unrelated to any allegations of wrongdoing or political bias.

CNN reported, “Both lawyers were relatively junior but frequently spotted members of Mueller’s corps. Both have worked on court cases that Mueller opened as part of his investigation into Russian interference and coordination with the Trump campaign in the 2016 presidential election.”

Dickey specializes in cybercrime and worked on two Russia-related computer crime cases after joining Mueller’s team in November of 2017.

Richardson had previously clerked for Supreme Court Justice Stephen Breyer and worked with Mueller to prosecute Alex van der Zwann, who plead guilty in February to lying to investigators.

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