Authorities were searching Sunday for a man who may have been linked to the shooting of nine vehicles and wounding of five people on a highway in rural southeastern Kentucky.

Although they said they could not yet name him a suspect in Saturday’s shootings along busy Interstate 75, authorities said they consider 32-year-old Joseph A. Couch a “person of interest” and were searching for him in a remote area of rugged and hilly terrain north of London, a community of about 8,000 people roughly 75 miles (120 kilometers) south of Lexington.