Local emergency services were dispatched after a huge explosion in downtown Nashville.
CNN reported that authorities said they believe the incident was done intentionally.
"We do believe this to have been an intentional act," Don Aaron, a spokesperson with the Metro Nashville Police Department, told CNN. "Significant damage has been done to the infrastructure there on 2nd Avenue North."
A loud boom was heard early on Christmas morning, reports said, damaging buildings and blowing out windows.
At least three people have been transported to hospitals, CNN reported. There aren't yet any reports of critical injuries, CNN reported, citing Joseph Pleasant from the Nashville fire department.
The explosion came from a parked recreational car, ABC News reported. Emergency crews are attempting to determine the cause of the explosion. One local business owner told the Tennessean that the RV had been there since at least Thursday night.
Chief John Drake of the Metro Nashville Police Department told Fox affiliate that the area was immediately evacuated after one officer noticed an RV playing a recording that warned people to leave the area.
"All my windows, every single one of them got blown into the next room. If I had been standing there it would have been horrible," Buck McCoy, who lives near the area, told the Associated Press.
"It felt like a bomb. It was that big," he added. Local reports said the explosion could be heard from miles away.
Police say an explosion linked to a vehicle occurred outside a building on Second Avenue North. They have closed a 10-block radius around the explosion site.
Authorities are not aware whether anyone was inside the vehicle.
"We will find out who did this," said agent Matt Foster at a Friday news conference. "This is our city too. We're putting everything we have into finding who was responsible for what happened here today."
Local and federal agencies, including the FBI, are investigating the incident, according to a press release from the Nashville Police Department. The area has been shut down to accommodate the investigation.
In a tweet shortly after the incident, Tennessee Gov. Bill Lee expressed his condolences for those injured.
"We will supply all of the resources needed to determine what happened and who was responsible," he said, adding he is "praying for those who were injured and we thank all of our first responders who acted so quickly this morning."
President Donald Trump has been briefed on the incident and "will continue to receive regular updates," said White House spokesperson Judd Deere. "The President is grateful for the incredible first responders and praying for those who were injured."
This story is developing. Please check back for more updates.
