Nashville explosion leaves 41 businesses damaged

A Christmas morning explosion that rocked downtown Nashville left at least 41 businesses "materially damaged," in addition to displacing some residents and injuring three others, officials said.

Mayor John Cooper said the Friday blast was caused by a "deliberate bomb" in a motor home that went off. Three people sustained non-threatening injuries but no deaths were reported.

Several buildings were damaged and some residents were displaced. One building collapsed from the explosion, officials said. Cooper issued a 48-hour curfew for the affected area started at 4:30 p.m.