Russia is waiting for the final report of an adopted Russian child's death from the Unites States, the Foreign Ministry's commissioner for Human Rights, Democracy and Rule of Law said on Saturday.

Russia deemed the current report made no final conclusion of the probe into Maxim Kuzmin's death, which claimed the boy was killed in an accident, according to a statement published on the ministry's website.

Kuzmin died on Jan. 21, four months after he was taken along with his brother Kirill Kumzin from an orphanage in Pskov region by a U.S. family. Senior Russian officials accused the boy's adoptive mother of killing him.

Russia expected comprehensive information about the inquiry results from the U.S. authorities, Commissioner Konstantin Dolgov noted.

"We demand the U.S. side provide Russian diplomatic and consular officials in the United States with relevant forensic medical study documents, including Maxim Kuzmin's death certificate, and return his Russian passport (which has still not been done)," he added.

Dolgov said last month that Russia would continue to monitor the life of Russian children adopted by Americans.