Investigators continue to examine the site of an explosion Sunday, Dec. 27, 2020, in downtown Nashville, Tenn. An explosion that shook the largely deserted streets of downtown Nashville early Christmas morning shattered windows, damaged buildings and wounded multiple people. (AP Photo/Mark Humphrey)WILSON COUNTY, Tenn. – UPDATE: No explosives were found in the truck stopped on a Tennessee highway. Authorities in Tennessee shut down a road east of Nashville after stopping a box truck that they said had been playing audio “similar to what was heard” before a recreational vehicle exploded in downtown Nashville on Christmas Day. The driver left the parking lot and was pulled over by deputies in nearby Wilson County. A Wilson County dispatcher said the road that was shut down was Murfreesboro Road between Cedar Forest Road and Richmond Shop Road.