Multiple people are dead following a "devastating blast" at an explosives manufacturing plant in Tennessee on Friday, according to authorities.
The explosion occurred Friday morning at Accurate Energetic Systems in McEwen, located about 50 miles west of Nashville.
LIVE: Officials are providing an update on the incident. Watch live in the player below.
Humphreys County Sheriff Chris Davis confirmed to reporters there are "some" fatalities and several people missing in the blast, though he did not give specific numbers.
At least 13 people are unaccounted for, Hickman County Mayor Jim Bates told ABC News.
"We got a very big investigation," Davis said during a press briefing. "This is not going to be something that we're going to be like a car wreck or something like that, that we're just going to clean up the debris and leave. We're going to probably be here for a few days."
"We're trying to take as much time as is needed right now. We're prioritizing people that are involved, their families and trying to be very compassionate toward them," he continued.
The Bureau of Alcohol, Tobacco, Firearms and Explosives, Homeland Security and Tennessee Bureau of Investigation are among the agencies that have responded to the scene, Davis said.
Accurate Energetic Systems manufactures explosives and energetic devices for the military, aerospace, demolition and mining industries, according to its website.
Its customers include the Defense Department and Homeland Security, according to the Association of the United States Army.
The explosion occurred at 7:48 a.m. local time and destroyed one of the facility's buildings, officials said.
Video from a Nest camera at a home in Lobelville, about 11 miles from the plant, captured shaking as an explosion can be heard.
This is a developing story. Please check back for updates.