The man moved to the village three months ago from Siberia, RIA Novosti reported Thursday.
He allegedly approached his neighbors -- a married couple -- to invite them for a drink, but they refused.
"In the course of the ensuing conflict, the suspect killed the man and dragged his body to a barn," a law enforcement official said.
The man allegedly returned to the house, stabbed the woman to death before fleeing the scene, RIA Novosti reported.
He then came back to the house and stole cash and valuables.