Downtown Nashville explosion knocks communications offline

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, 2020 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. (Metro Nashville PD via AP)

Emergency personnel work near the scene of an explosion in downtown Nashville, Tenn., Friday, Dec. 25, 2020. Buildings shook in the immediate area and beyond after a loud boom was heard early Christmas morning.(AP Photo/Mark Humphrey)

NASHVILLE, Tenn. — A recreational vehicle parked in the deserted streets of downtown Nashville exploded early Christmas morning, causing widespread communications outages that took down police emergency systems and grounded holiday travel at the city’s airport. Authorities said they think the blast was intentional.