Apparently linked to the RV.
Seems likely that sharing the image of the RV has paid off, or it was the VIN

BREAKING: @jeffpeguescbs reports for CBS News: Anthony Quinn Warner, 63, is the person of interest in the Nashville Christmas Day explosion. At least 2 tips were called in to @FBI about Warner, prior to the explosion. Quinn is a Nashville area resident https://t.co/FCZdy13a6b

— David Begnaud (@DavidBegnaud) December 26, 2020