An RV loaded with a powerful bomb has exploded in Nashville. The incident was preceded by the sound of gunshots, and a recorded message warning people to evacuate.
(Source).
Nashville authorities believe an explosion that occurred in downtown Nashville early Christmas morning was an "intentional act" and sparked by a vehicle blast.
Police came across a suspicious RV parked outside a nearby AT&T building near Second Avenue and Commerce Street before 6 a.m., when initially responding to calls of shots fired in the area, said Metro police spokesperson Don Aaron.
There was no immediate evidence of any shooting but officers alerted the department's bomb squad, which was en route when a "significant explosion" happened about 30 minutes later, Aaron said.
Just before the blast, witnesses in the area report a dire warning coming from the RV: “Evacuate now. There is a bomb. A bomb is in this vehicle and will explode."
Then, the voice started a 15-minute countdown.
(Source).