Federal agents converged Saturday on the home of a possible person of interest in the explosion that rocked downtown Nashville as investigators scoured hundreds of tips and leads in the blast that damaged dozens of buildings on Christmas morning.
More than 24 hours after the explosion, a motive remained elusive as investigators worked round-the-clock to resolve unanswered questions about a recreational vehicle that blew up on a mostly deserted street on a sleepy holiday morning and was prefaced by a recorded warning advising those nearby to evacuate.
The attack, which damaged an AT&T building, continued to wreak havoc Saturday on cellphone service and police and hospital communications in several Southern states.
Investigators from multiple federal and local law enforcement agencies were at a home in Antioch, in suburban Nashville, after receiving information relevant to the investigation, FBI officials said.
A law enforcement official, who was not authorized to discuss an ongoing investigation and spoke to The Associated Press on condition of anonymity, said investigators regard a person associated with the property as a person of interest.
Federal agents could be seen looking around the property, searching the home and the backyard.
There were other signs of progress in the investigation, as the FBI revealed that it was looking at a number of individuals who may be connected to it.
Officials also said no additional explosive devices have been found, indicating no active threat to the area.
Investigators have received around 500 tips and leads.