NASHVILLE, Tenn. (AP) — State authorities are seeking information from the public and law enforcement agencies that have reported cases of vehicles being shot on Interstate 81 in east Tennessee.

Tennessee's Department of Safety and Homeland Security and the Tennessee Highway Patrol are advising motorists to use extreme caution when driving on I-81 in Hamblen and Jefferson counties after vehicles were shot at on at least three different occasions. Officials have not reported any injuries in the shootings, which took place this month.

On Friday, THP said investigators began going door-to-door to interview residents along I-81 in Hamblen County to see if they have heard any neighbors shooting late at night.

Individuals and law enforcement agencies with pertinent information are asked to contact Sgt. Kevin Kimbrough at the highway patrol's criminal investigation division.