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Authorities shut down Nashville interstate to investigate SUV

NASHVILLE, Tenn. (AP) -- Authorities shut down all eight lanes of Interstate 24/40 in downtown Nashville after stopping a sport utility vehicle and finding firearms inside.

Officers also found a device that WSMV-TV reported was detonated on suspicion it might be an explosive.

A man and a woman traveling in the SUV were arrested and a small child with them was taken into protective custody, WKRN-TV reported.

News reports said handguns, a sawed off shotgun, an AK-47 rifle and body armor were found in the vehicle after it was stopped for failing to signal a lane change around 2 p.m.

Traffic backed up in miles for both directions as the interstate was closed. It reopened about 3:15 p.m.