When a parked RV exploded in Nashville on Christmas Day, three people were injured a much of a downtown street was destroyed.<br />Now, Business Insider reports law enforcement has identified Anthony Quinn Warner, 63, as a 'person of interest.'<br />Authorities called the blast 'intentional,' and hundreds of investigators quickly fanned out to determine a motive and pinpoint a culprit.<br />Shortly before the RV exploded, an audio recording urged people to evacuate the area, warning that a bomb would be detonated in 15 minutes.<br />Possible human remains were found near the explosion, but it's still unclear whether the remains belonged to a victim or someone connected to the explosion.