George Nader pleaded guilty in January to bringing a 14-year-old boy from the Czech Republic to the U.S. 20 years ago to engage in sexual activity. He also acknowledged possessing child pornography.

Nader's name appears more than 100 times in the Mueller report. It details Nader's efforts to serve as liaison between Russians and members of President Donald Trump's transition team.

In the 1990s, Nader served as a broker to facilitate the release of American hostages held in the Middle East.

The convictions carried a 10-year mandatory minimum. The judge could have imposed a longer term, though prosecutors also recommended a 10-year sentence.

Nader also agreed to pay $150,000 in restitution to the Czech boy he abused, who is now an adult and testified at Friday's sentencing hearing in U.S. District Court in Alexandria by phone.