METRO NASHVILLE PD VIA AP
This image taken from surveillance video provided by Metro Nashville PD shows a recreational vehicle that was involved in a blast on Friday, Dec. 25, in Nashville, Tenn. An explosion shook the largely deserted streets early Christmas morning, shattering windows, damaging buildings and wounding some people. Police were responding to a report of shots fired when they encountered a recreational vehicle blaring a recording that said a bomb would detonate in 15 minutes, Metro Nashville Police Chief John Drake said. Police evacuated nearby buildings and called in the bomb squad.