SURVEILLANCE footage captured the moment a bomb exploded in Nashville on Christmas morning, injuring three people.
The FBI has launched an investigation into the blast, which came after a suspicious RV started playing a recording that warned the explosion was coming.
According to reports, investigators believe that the Friday morning explosion was an “intentional act.”
Nashville police said: “This appears to have been an intentional act. Law enforcement is closing downtown streets as investigation continues.”
On Friday afternoon, law enforcement officials told CBS News they discovered what appear to be human remains.
The alleged remains were found near the explosion site, according to the report.
It has not been revealed “whether the remains are from someone connected to the explosion or from an innocent victim,” a tweet read.
The police were initially responding to reports of shots being fired, investigators said.
One resident, Bryan Norwood, told Forbes that he heard: “The first time it was 3 shots, the second time it was 5 shots, the third round it was probably about 10 or 15 shots.”
Cops also responded to reports of a recording coming from an RV that said “a potential bomb would detonate within 15 minutes.”
This led to officers evacuating surrounding buildings before the vehicle exploded – knocking one officer to the ground.
President Trump has been briefed on the explosion and will “continue to receive regular updates,” White House spokesperson Judd Deere said.
“The President is grateful for the incredible first responders and praying for those who were injured.”
Cops were reportedly en route to the suspicious vehicle when it exploded.
Roughly 30 people were evacuated from upper lofts on Second and Broadway near Commerce Street in the Tennessee city.
The Tennessee Bureau of Investigation is sending agents and an Accelerant Detection K9 have also been sent to help investigate.
Special operations confirmed that they have received information that there could be additional devices in vehicles.
People have been advised to steer clear of vehicles in the downtown area.
The explosion led one building to collapse, and vehicles on the road have reportedly caught on fire.
Buildings shook in the immediate area and beyond after the loud boom.
The blast caused “heavy structural damage” and glass and steel to shatter “everywhere,” according to Nashville Fire radio traffic.
Police spokesman Don Aaron said three people were taken to area hospitals for treatment, although none were in critical condition.
The incident occurred at around 5.40am and heavy black smoke was seen rising from the area, WKRN reported.
“There is an incident involving an explosion. This is an active scene,” the Nashville Fire Department said in a statement.
“Metro Nashville Police Department and Nashville Fire Department are on the scene. There are no additional details to provide at this time.”
Michael Knight, a spokesman for the the Bureau of Alcohol, Tobacco, Firearms and Explosives said: “Right now, it’s a public safety concern, to make sure everybody is accounted for and to make sure the spread of the fire doesn’t go any further.”
Buck McCoy, who lives near the area, posted videos on Facebook that show water pouring down the ceiling of his home.
Alarms blare in the background and cries of people in great distress ring in the background. A fire is visible in the street outside. McCoy said the windows of his home were entirely blown out.
“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,” he said.
“It felt like a bomb. It was that big,” he told The Associated Press.
“There were about four cars on fire. I don’t know if it was so hot they just caught on fire, and the trees were all blown apart,” he said.
