A former FBI informant who admitted to lying about U.S. President Joe Biden and his son Hunter Biden’s interactions with a Ukrainian energy company was sentenced to six years in prison on Wednesday, court records showed.

Alexander Smirnov falsely claimed to his FBI handler that executives from the Ukrainian energy company Burisma paid Biden and his son $5 million each around 2015.

A former FBI informant who fabricated a bribery story involving President Joe Biden and his son Hunter was sentenced to six years in prison on Wednesday. The false claims became a focal point of Republican-led impeachment efforts against Biden.

No evidence emerged that the allegations against the Bidens were true, but the story was taken up by some Republicans, who made the unverified claims part of their effort to impeach President