The U.S. special counsel who prosecuted Democratic President Joe Biden's son Hunter Biden called the president's criticisms of the cases "gratuitous and wrong" in a final report on his probe published on Monday.

The Justice Department special counsel whose six-year case into Hunter Biden was short-circuited last month by the unconditional pardon President Joe Biden granted to his son, criticized the outgoing president in his final report Monday.

President Biden unfairly attacked the integrity of the justice system by criticizing the long-running federal investigations into his son Hunter Biden, to whom he granted a federal pardon, according to the outgoing special counsel who led the cases.