FBI and local authorities will be holding a press conference shortly to give details on an explosion in Nashville early Christmas morning. Earlier today police said the explosion came from an RV that was parked on Second Avenue, in the midst of a business and entertainment district. The RV exploded in an area of downtown Nashville that contains residential units. It was parked outside of an AT&T building. Forty-one businesses were damaged in the massive explosion.
Police spokesman Don Aaron confirmed there was an audio warning playing [Listen Here] in advance of a massive exposition from the the RV. Police have released CCTV footage of the RV that was parked in the area. The updated Presser is scheduled for 6:00pm ET: