"Last year, Russia decided not to engage this mechanism. We will stick to this position," Gennady Gatilov was quoted as saying by the mission.
The diplomat accused the UN body of being openly "anti-Russian and highly politicized."
"It is only independent on paper. If you look closer, you will see that this mechanism was created by the West to peddle a carefully crafted narrative that is biased against Russia," Gatilov explained.
The commission was created in March 2022 by the UN Human Rights Council to probe Russia's alleged war crimes in Ukraine. Twenty-eight countries voted on Tuesday to extend its mandate for another year, four countries fewer than during the inaugural vote.