The mayor thanked the police for saving people from harm.
Metro Nashville Police Department officers were responding to a call of shots fired around 5:30 a.m. CT Friday when they found the motor home parked in front of an AT&T transmission building at 166 2nd Avenue North.
When they heard the warning they moved people away.
The RV exploded at 6:30 a.m. CT, said police spokesman Don Aaron. “We do believe this to have been an intentional act.”
The force of the explosion knocked down one officer, Aaron said, and caused hearing loss in another. But no officers suffered serious injuries.
AT&T spokesman Jim Greer told CNN that the company’s network hub in the city was damaged in the explosion
and service in the Nashville area was affected. AT&T is the parent company of CNN.
Authorities: No credible threats signaling impending attack before Christmas
The street is on the edge of Nashville’s hospitality and tourist district in a historic part of town.
Officials have no information about whether anyone was inside the RV when it exploded. Police tweeted a photo of the RV as it was driven into the area at 1:22 a.m.
There were no known credible threats in the Nashville area that would have signaled an impending attack on or before Christmas, a federal law enforcement source told CNN.
A second law enforcement source said federal authorities are not aware of any increased chatter nationally by known extremist groups that would indicate any credible plans for conducting attacks around the holidays.
Acting US Attorney General Jeff Rosen was briefed on the incident, according to his spokesman, “and directed that all DOJ resources be made available to assist in the investigation.”
Technical experts from the FBI lab and evidence response teams have been brought in from around the country to “help process this massive crime scene,” said FBI agent Matt Foster.
ATF Special Agent in Charge Mickey French said his agency had activated its national response teams and was working alongside the FBI and MNPD. The agency has explosive specialists, chemists and engineers involved in the evidence recovery process.
The White House said that President Donald Trump has been briefed and would receive “regular updates.” President-elect Joe Biden has also been briefed.
Tennessee Gov. Bill Lee said in a statement on Twitter that the state would “supply all the resources needed” to determine the cause of the explosion.