Three people have been arrested in a Tuesday morning armed robbery in western Carter County. Police are searching for looking for a fourth suspect. According to Sheriff Chris Mathes the robbery call came in around 8:30 at a home on Hillside Drive. He tells us that a shot was fired during the robbery. Two black males and two white females took a large amount of cash. The money has been recovered. We will bring you more details on this story as they become available. (jb)