Three injured in Nashville blast that authorities believe was intentional

Metro Nashville police chief John Drake said police were responding to a report of shots fired when they encountered a vehicle blaring a recording that said a potential bomb was to detonate in 15 minutes

Emergency personnel work near the scene of an explosion in downtown Nashville on Christmas Day. Picture: AP Photo/Mark Humphrey

An explosion shook the largely deserted streets of central Nashville, in the US, early Christmas morning, shattering windows, damaging buildings and wounding three people.

Authorities said they believed the blast was intentional, but they do not yet know a motive or target.