The stale remains were Discovered In the Republic of Buryatia, Kabanskiy District, Russia. CONFIRMED HOAX:
iReport —
Around one month ago this publication reported on a major UFO event that occurred in the region of Irkutsk in Russia's Siberia. Hundreds of villagers saw a huge object, glowing pink and blue, hurtle towards Earth before loudly impacting the ground in a wooded area . The event received widespread coverage in Russia and was reported by Inter-fax, Russia's government news agency. In the West the event was completely ignored if not deliberately kept from public view.
An enormous team of government officials, including military personal, secret service agents and science ministry officials made their way to the UFO crash site within hours of the event occurring.
Now it seems a video has been leaked onto the Internet showing a dead Alien found in the Republic of Buryatia, not far from the site of the UFO crash.
Some of the Translation:

"we found him over there"
"We found him around two hours ago"
"It must have been lying here for days"