Buchanan County, VA — Authorities are searching for a person of interest following a shooting Wednesday night in Buchanan County, Virginia. According to Buchanan County Sheriff Ray Foster, the shooting occurred around 7:30 PM at a residence in Big Rock, Virginia. Sheriff Foster says the male victim was airlifted to a hospital where he is listed in critical condition. Authorities believe the shooting happened during an argument. No other details have been released and the investigation continues. We will update this story as information is released.